122212110112021 has 16 divisors (see below), whose sum is σ = 123123632730048. Its totient is φ = 121304467440000.

The previous prime is 122212110111989. The next prime is 122212110112039. The reversal of 122212110112021 is 120211011212221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122212110112021 - 2⁵ = 122212110111989 is a prime.

It is a super-2 number, since 2×122212110112021² (a number of 29 digits) contains 22 as substring.

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 122212110112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212110112061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135758646 + ... + 136655896.

It is an arithmetic number, because the mean of its divisors is an integer number (7695227045628).

Almost surely, 2^{122212110112021} is an apocalyptic number.

It is an amenable number.

122212110112021 is a deficient number, since it is larger than the sum of its proper divisors (911522618027).

122212110112021 is a wasteful number, since it uses less digits than its factorization.

122212110112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899412.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122212110112021 its reverse (120211011212221), we get a palindrome (242423121324242).

The spelling of 122212110112021 in words is "one hundred twenty-two trillion, two hundred twelve billion, one hundred ten million, one hundred twelve thousand, twenty-one".