111110002022121 has 16 divisors (see below), whose sum is σ = 150023705045760. Its totient is φ = 73134838857600.

The previous prime is 111110002022099. The next prime is 111110002022171. The reversal of 111110002022121 is 121220200011111.

It is a happy number.

It is not a de Polignac number, because 111110002022121 - 2²² = 111109997827817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111110002022121.

It is not an unprimeable number, because it can be changed into a prime (111110002022171) 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 15 ways as a sum of consecutive naturals, for example, 17799421 + ... + 23217221.

It is an arithmetic number, because the mean of its divisors is an integer number (9376481565360).

Almost surely, 2^{111110002022121} is an apocalyptic number.

It is an amenable number.

111110002022121 is a deficient number, since it is larger than the sum of its proper divisors (38913703023639).

111110002022121 is an equidigital number, since it uses as much as digits as its factorization.

111110002022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504416.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111110002022121 its reverse (121220200011111), we get a palindrome (232330202033232).

The spelling of 111110002022121 in words is "one hundred eleven trillion, one hundred ten billion, two million, twenty-two thousand, one hundred twenty-one".