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11222111221212 = 2233727919055903
BaseRepresentation
bin1010001101001101100111…
…1100111111010111011100
31110201211020020002210002210
42203103121330333113130
52432330340433034322
635511211113520420
72235525243335163
oct243233174772734
943654206083083
1011222111221212
1136372a8251951
121312b06413110
13635318637378
142ab2200aa3da
15146da5dcb70c
hexa34d9f3f5dc

11222111221212 has 48 divisors (see below), whose sum is σ = 26902265341952. Its totient is φ = 3638299187520.

The previous prime is 11222111221207. The next prime is 11222111221229. The reversal of 11222111221212 is 21212211122211.

It is a super-2 number, since 2×112221112212122 (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288748 + ... + 5767155.

Almost surely, 211222111221212 is an apocalyptic number.

11222111221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222111221212 is an abundant number, since it is smaller than the sum of its proper divisors (15680154120740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11222111221212 is a wasteful number, since it uses less digits than its factorization.

11222111221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058738 (or 9058736 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 11222111221212 its reverse (21212211122211), we get a palindrome (32434322343423).

Subtracting 11222111221212 from its reverse (21212211122211), we obtain a palindrome (9990099900999).

The spelling of 11222111221212 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 444 2791 5582 8373 11164 16746 33492 103267 206534 309801 413068 619602 1239204 9055903 18111806 27167709 36223612 54335418 108670836 335068411 670136822 1005205233 1340273644 2010410466 4020820932 25275025273 50550050546 75825075819 101100101092 151650151638 303300303276 935175935101 1870351870202 2805527805303 3740703740404 5611055610606 11222111221212