122111021210021 has 16 divisors (see below), whose sum is σ = 128741575934400. Its totient is φ = 115500855875328.

The previous prime is 122111021209937. The next prime is 122111021210023. The reversal of 122111021210021 is 120012120111221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122111021210021 is a prime.

It is a super-2 number, since 2×122111021210021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111021210023) 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, 191415635 + ... + 192052511.

It is an arithmetic number, because the mean of its divisors is an integer number (8046348495900).

Almost surely, 2^{122111021210021} is an apocalyptic number.

It is an amenable number.

122111021210021 is a deficient number, since it is larger than the sum of its proper divisors (6630554724379).

122111021210021 is a wasteful number, since it uses less digits than its factorization.

122111021210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652868.

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

Adding to 122111021210021 its reverse (120012120111221), we get a palindrome (242123141321242).

The spelling of 122111021210021 in words is "one hundred twenty-two trillion, one hundred eleven billion, twenty-one million, two hundred ten thousand, twenty-one".