111110211012021 has 32 divisors (see below), whose sum is σ = 168929987788800. Its totient is φ = 64352569703424.

The previous prime is 111110211012013. The next prime is 111110211012083. The reversal of 111110211012021 is 120210112011111.

It is not a de Polignac number, because 111110211012021 - 2³ = 111110211012013 is a prime.

It is a super-2 number, since 2×111110211012021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110211812021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50594380 + ... + 52744778.

It is an arithmetic number, because the mean of its divisors is an integer number (5279062118400).

Almost surely, 2^{111110211012021} is an apocalyptic number.

It is an amenable number.

111110211012021 is a deficient number, since it is larger than the sum of its proper divisors (57819776776779).

111110211012021 is a wasteful number, since it uses less digits than its factorization.

111110211012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228365.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111110211012021 its reverse (120210112011111), we get a palindrome (231320323023132).

The spelling of 111110211012021 in words is "one hundred eleven trillion, one hundred ten billion, two hundred eleven million, twelve thousand, twenty-one".