111110021022121 has 32 divisors (see below), whose sum is σ = 124943171625216. Its totient is φ = 97946047584000.

The previous prime is 111110021022101. The next prime is 111110021022179. The reversal of 111110021022121 is 121220120011111.

It is not a de Polignac number, because 111110021022121 - 2³³ = 111101431087529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110021022095 and 111110021022104.

It is not an unprimeable number, because it can be changed into a prime (111110021022101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 641971231 + ... + 642144283.

It is an arithmetic number, because the mean of its divisors is an integer number (3904474113288).

Almost surely, 2^{111110021022121} is an apocalyptic number.

111110021022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111110021022121 is a deficient number, since it is larger than the sum of its proper divisors (13833150603095).

111110021022121 is a wasteful number, since it uses less digits than its factorization.

111110021022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186673.

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

Adding to 111110021022121 its reverse (121220120011111), we get a palindrome (232330141033232).

The spelling of 111110021022121 in words is "one hundred eleven trillion, one hundred ten billion, twenty-one million, twenty-two thousand, one hundred twenty-one".