111235553120321 has 4 divisors (see below), whose sum is σ = 127126346423232. Its totient is φ = 95344759817412.

The previous prime is 111235553120291. The next prime is 111235553120347. The reversal of 111235553120321 is 123021355532111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111235553120321 - 2²² = 111235548926017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111235553128321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7945396651445 + ... + 7945396651458.

It is an arithmetic number, because the mean of its divisors is an integer number (31781586605808).

Almost surely, 2^{111235553120321} is an apocalyptic number.

It is an amenable number.

111235553120321 is a deficient number, since it is larger than the sum of its proper divisors (15890793302911).

111235553120321 is an equidigital number, since it uses as much as digits as its factorization.

111235553120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15890793302910.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 111235553120321 in words is "one hundred eleven trillion, two hundred thirty-five billion, five hundred fifty-three million, one hundred twenty thousand, three hundred twenty-one".