111100331021 has 8 divisors (see below), whose sum is σ = 111218088960. Its totient is φ = 110982616128.

The previous prime is 111100330973. The next prime is 111100331053. The reversal of 111100331021 is 120133001111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111100331021 - 2²² = 111096136717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100330987 and 111100331005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100330021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8348645 + ... + 8361941.

It is an arithmetic number, because the mean of its divisors is an integer number (13902261120).

Almost surely, 2^111100331021 is an apocalyptic number.

It is an amenable number.

111100331021 is a deficient number, since it is larger than the sum of its proper divisors (117757939).

111100331021 is a wasteful number, since it uses less digits than its factorization.

111100331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21523.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111100331021 its reverse (120133001111), we get a palindrome (231233332132).

The spelling of 111100331021 in words is "one hundred eleven billion, one hundred million, three hundred thirty-one thousand, twenty-one".