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1331222222223 = 33372395575543
BaseRepresentation
bin10011010111110011000…
…001110001010110001111
311201021010011110200022000
4103113303001301112033
5133302320342102343
62455315520123343
7165114633121335
oct23276301612617
94637104420260
101331222222223
1147362826a933
12195bbb766553
13986c276474a
1448608069b55
1524964ec8ed3
hex135f307158f

1331222222223 has 32 divisors (see below), whose sum is σ = 2033958451200. Its totient is φ = 859882389408.

The previous prime is 1331222222191. The next prime is 1331222222227. The reversal of 1331222222223 is 3222222221331.

It is not a de Polignac number, because 1331222222223 - 25 = 1331222222191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331222222227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2549011 + ... + 3026532.

It is an arithmetic number, because the mean of its divisors is an integer number (63561201600).

Almost surely, 21331222222223 is an apocalyptic number.

1331222222223 is a deficient number, since it is larger than the sum of its proper divisors (702736228977).

1331222222223 is a wasteful number, since it uses less digits than its factorization.

1331222222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575828 (or 5575822 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 1331222222223 its reverse (3222222221331), we get a palindrome (4553444443554).

The spelling of 1331222222223 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 3 9 27 37 111 239 333 717 999 2151 6453 8843 26529 79587 238761 5575543 16726629 50179887 150539661 206295091 618885273 1332554777 1856655819 3997664331 5569967457 11992992993 35978978979 49304526749 147913580247 443740740741 1331222222223