111450021051 has 16 divisors (see below), whose sum is σ = 149007808800. Its totient is φ = 74096233728.

The previous prime is 111450021031. The next prime is 111450021073. The reversal of 111450021051 is 150120054111.

It is not a de Polignac number, because 111450021051 - 2²³ = 111441632443 is a prime.

It is a super-2 number, since 2×111450021051² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111450021031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4794565 + ... + 4817753.

It is an arithmetic number, because the mean of its divisors is an integer number (9312988050).

Almost surely, 2^111450021051 is an apocalyptic number.

111450021051 is a deficient number, since it is larger than the sum of its proper divisors (37557787749).

111450021051 is a wasteful number, since it uses less digits than its factorization.

111450021051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 111450021051 its reverse (150120054111), we get a palindrome (261570075162).

The spelling of 111450021051 in words is "one hundred eleven billion, four hundred fifty million, twenty-one thousand, fifty-one".