111550070621 has 4 divisors (see below), whose sum is σ = 121690986144. Its totient is φ = 101409155100.

The previous prime is 111550070573. The next prime is 111550070629. The reversal of 111550070621 is 126070055111.

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 111550070621 - 2¹⁰ = 111550069597 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 (111550070629) 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, 5070457745 + ... + 5070457766.

It is an arithmetic number, because the mean of its divisors is an integer number (30422746536).

Almost surely, 2^111550070621 is an apocalyptic number.

111550070621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111550070621 is a deficient number, since it is larger than the sum of its proper divisors (10140915523).

111550070621 is a wasteful number, since it uses less digits than its factorization.

111550070621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140915522.

The product of its (nonzero) digits is 2100, while the sum is 29.

The spelling of 111550070621 in words is "one hundred eleven billion, five hundred fifty million, seventy thousand, six hundred twenty-one".