120121110012021 has 32 divisors (see below), whose sum is σ = 162615817728000. Its totient is φ = 78859001103168.

The previous prime is 120121110012019. The next prime is 120121110012031. The reversal of 120121110012021 is 120210011121021.

It is a happy number.

It is not a de Polignac number, because 120121110012021 - 2¹ = 120121110012019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121110012031) 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, 410272960 + ... + 410565638.

It is an arithmetic number, because the mean of its divisors is an integer number (5081744304000).

Almost surely, 2^{120121110012021} is an apocalyptic number.

It is an amenable number.

120121110012021 is a deficient number, since it is larger than the sum of its proper divisors (42494707715979).

120121110012021 is a wasteful number, since it uses less digits than its factorization.

120121110012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297313.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120121110012021 its reverse (120210011121021), we get a palindrome (240331121133042).

The spelling of 120121110012021 in words is "one hundred twenty trillion, one hundred twenty-one billion, one hundred ten million, twelve thousand, twenty-one".