120121222112021 has 32 divisors (see below), whose sum is σ = 132273393880320. Its totient is φ = 108400702685184.

The previous prime is 120121222112009. The next prime is 120121222112039. The reversal of 120121222112021 is 120211222121021.

It is not a de Polignac number, because 120121222112021 - 2³⁴ = 120104042242837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120121222111984 and 120121222112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121222111021) 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, 220851221 + ... + 221394453.

It is an arithmetic number, because the mean of its divisors is an integer number (4133543558760).

Almost surely, 2^{120121222112021} is an apocalyptic number.

It is an amenable number.

120121222112021 is a deficient number, since it is larger than the sum of its proper divisors (12152171768299).

120121222112021 is a wasteful number, since it uses less digits than its factorization.

120121222112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544445.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120121222112021 its reverse (120211222121021), we get a palindrome (240332444233042).

The spelling of 120121222112021 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".