111110220011021 has 48 divisors (see below), whose sum is σ = 142376119486848. Its totient is φ = 85734927734400.

The previous prime is 111110220011009. The next prime is 111110220011033. The reversal of 111110220011021 is 120110022011111.

It is an interprime number because it is at equal distance from previous prime (111110220011009) and next prime (111110220011033).

It is a de Polignac number, because none of the positive numbers 2^k-111110220011021 is a prime.

It is a super-2 number, since 2×111110220011021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111110220010987 and 111110220011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110220011051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2097461291 + ... + 2097514263.

It is an arithmetic number, because the mean of its divisors is an integer number (2966169155976).

Almost surely, 2^{111110220011021} is an apocalyptic number.

111110220011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111110220011021 is a deficient number, since it is larger than the sum of its proper divisors (31265899475827).

111110220011021 is a wasteful number, since it uses less digits than its factorization.

111110220011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90882 (or 90875 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111110220011021 its reverse (120110022011111), we get a palindrome (231220242022132).

The spelling of 111110220011021 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twenty million, eleven thousand, twenty-one".