111120002001021 has 64 divisors (see below), whose sum is σ = 170432352921600. Its totient is φ = 63862473717504.

The previous prime is 111120002001017. The next prime is 111120002001061. The reversal of 111120002001021 is 120100200021111.

It is not a de Polignac number, because 111120002001021 - 2² = 111120002001017 is a prime.

It is a super-2 number, since 2×111120002001021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111120002000988 and 111120002001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120002001061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98916075 + ... + 100033143.

It is an arithmetic number, because the mean of its divisors is an integer number (2663005514400).

Almost surely, 2^{111120002001021} is an apocalyptic number.

It is an amenable number.

111120002001021 is a deficient number, since it is larger than the sum of its proper divisors (59312350920579).

111120002001021 is a wasteful number, since it uses less digits than its factorization.

111120002001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119730.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111120002001021 its reverse (120100200021111), we get a palindrome (231220202022132).

The spelling of 111120002001021 in words is "one hundred eleven trillion, one hundred twenty billion, two million, one thousand, twenty-one".