111011122022121 has 12 divisors (see below), whose sum is σ = 161937016284420. Its totient is φ = 73274668000800.

The previous prime is 111011122022111. The next prime is 111011122022159. The reversal of 111011122022121 is 121220221110111.

It is a happy number.

111011122022121 is a `hidden beast` number, since 1 + 110 + 111 + 220 + 221 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63292923819225 + 47718198202896 = 7955685^2 + 6907836^2 .

It is not a de Polignac number, because 111011122022121 - 2⁵ = 111011122022089 is a prime.

It is a super-2 number, since 2×111011122022121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111011122022094 and 111011122022103.

It is not an unprimeable number, because it can be changed into a prime (111011122022111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61062222426 + ... + 61062224243.

It is an arithmetic number, because the mean of its divisors is an integer number (13494751357035).

Almost surely, 2^{111011122022121} is an apocalyptic number.

It is an amenable number.

111011122022121 is a deficient number, since it is larger than the sum of its proper divisors (50925894262299).

111011122022121 is a wasteful number, since it uses less digits than its factorization.

111011122022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122124446776 (or 122124446773 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111011122022121 its reverse (121220221110111), we get a palindrome (232231343132232).

The spelling of 111011122022121 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".