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2112220220000 = 255411292511319
BaseRepresentation
bin11110101111001010001…
…000101100101001100000
321110221000020222200121112
4132233022020230221200
5234101311334020000
64254201321442452
7305413533431102
oct36571210545140
97427006880545
102112220220000
11744873281060
122a1442340428
13124248a22207
1474336895572
1539e24e88235
hex1ebca22ca60

2112220220000 has 480 divisors, whose sum is σ = 5892078931200. Its totient is φ = 738080000000.

The previous prime is 2112220219979. The next prime is 2112220220017. The reversal of 2112220220000 is 220222112.

It is a super-2 number, since 2×21122202200002 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1601379341 + ... + 1601380659.

It is an arithmetic number, because the mean of its divisors is an integer number (12275164440).

Almost surely, 22112220220000 is an apocalyptic number.

2112220220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112220220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2946039465600).

2112220220000 is an abundant number, since it is smaller than the sum of its proper divisors (3779858711200).

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

2112220220000 is a wasteful number, since it uses less digits than its factorization.

2112220220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2112220220000 its reverse (220222112), we get a palindrome (2112440442112).

The spelling of 2112220220000 in words is "two trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty thousand".