12220021111121 has 16 divisors (see below), whose sum is σ = 12669327889920. Its totient is φ = 11774166687360.

The previous prime is 12220021111003. The next prime is 12220021111141. The reversal of 12220021111121 is 12111112002221.

It is a cyclic number.

It is not a de Polignac number, because 12220021111121 - 2³⁰ = 12218947369297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220021111121.

It is not an unprimeable number, because it can be changed into a prime (12220021111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105780890 + ... + 105896348.

It is an arithmetic number, because the mean of its divisors is an integer number (791832993120).

Almost surely, 2^{12220021111121} is an apocalyptic number.

It is an amenable number.

12220021111121 is a deficient number, since it is larger than the sum of its proper divisors (449306778799).

12220021111121 is a wasteful number, since it uses less digits than its factorization.

12220021111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130376.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12220021111121 its reverse (12111112002221), we get a palindrome (24331133113342).

The spelling of 12220021111121 in words is "twelve trillion, two hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred twenty-one".