111022011212121 has 12 divisors (see below), whose sum is σ = 165538195929600. Its totient is φ = 71627104007640.

The previous prime is 111022011212071. The next prime is 111022011212149. The reversal of 111022011212121 is 121212110220111.

It is a happy number.

111022011212121 is a `hidden beast` number, since 1 + 110 + 220 + 1 + 1 + 212 + 121 = 666.

It is not a de Polignac number, because 111022011212121 - 2¹⁵ = 111022011179353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111022011212094 and 111022011212103.

It is not an unprimeable number, because it can be changed into a prime (111022011212221) 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 11 ways as a sum of consecutive naturals, for example, 198964177521 + ... + 198964178078.

It is an arithmetic number, because the mean of its divisors is an integer number (13794849660800).

Almost surely, 2^{111022011212121} is an apocalyptic number.

It is an amenable number.

111022011212121 is a deficient number, since it is larger than the sum of its proper divisors (54516184717479).

111022011212121 is a wasteful number, since it uses less digits than its factorization.

111022011212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397928355636 (or 397928355633 counting only the distinct ones).

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

Adding to 111022011212121 its reverse (121212110220111), we get a palindrome (232234121432232).

The spelling of 111022011212121 in words is "one hundred eleven trillion, twenty-two billion, eleven million, two hundred twelve thousand, one hundred twenty-one".