111056355221 has 6 divisors (see below), whose sum is σ = 129188005110. Its totient is φ = 95191161576.

The previous prime is 111056355217. The next prime is 111056355229. The reversal of 111056355221 is 122553650111.

It can be written as a sum of positive squares in only one way, i.e., 72291076900 + 38765278321 = 268870^2 + 196889^2 .

It is not a de Polignac number, because 111056355221 - 2² = 111056355217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111056355229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1133228066 + ... + 1133228163.

It is an arithmetic number, because the mean of its divisors is an integer number (21531334185).

Almost surely, 2^111056355221 is an apocalyptic number.

It is an amenable number.

111056355221 is a deficient number, since it is larger than the sum of its proper divisors (18131649889).

111056355221 is an equidigital number, since it uses as much as digits as its factorization.

111056355221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266456243 (or 2266456236 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 111056355221 in words is "one hundred eleven billion, fifty-six million, three hundred fifty-five thousand, two hundred twenty-one".