111361255220 has 24 divisors (see below), whose sum is σ = 234110406600. Its totient is φ = 44496545792.

The previous prime is 111361255217. The next prime is 111361255303. The reversal of 111361255220 is 22552163111.

It can be written as a sum of positive squares in 4 ways, for example, as 11076299536 + 100284955684 = 105244^2 + 316678^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978225 + ... + 3015384.

It is an arithmetic number, because the mean of its divisors is an integer number (9754600275).

Almost surely, 2^111361255220 is an apocalyptic number.

111361255220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111361255220 is an abundant number, since it is smaller than the sum of its proper divisors (122749151380).

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

111361255220 is a wasteful number, since it uses less digits than its factorization.

111361255220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5994547 (or 5994545 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 111361255220 in words is "one hundred eleven billion, three hundred sixty-one million, two hundred fifty-five thousand, two hundred twenty".