122120121011021 has 48 divisors (see below), whose sum is σ = 147337895227392. Its totient is φ = 99104611050720.

The previous prime is 122120121011017. The next prime is 122120121011023. The reversal of 122120121011021 is 120110121021221.

It is not a de Polignac number, because 122120121011021 - 2² = 122120121011017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120121011023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841885526 + ... + 842030568.

It is an arithmetic number, because the mean of its divisors is an integer number (3069539483904).

Almost surely, 2^{122120121011021} is an apocalyptic number.

It is an amenable number.

122120121011021 is a deficient number, since it is larger than the sum of its proper divisors (25217774216371).

122120121011021 is a wasteful number, since it uses less digits than its factorization.

122120121011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147822 (or 147791 counting only the distinct ones).

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

Adding to 122120121011021 its reverse (120110121021221), we get a palindrome (242230242032242).

The spelling of 122120121011021 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, eleven thousand, twenty-one".