120204440456121 has 24 divisors (see below), whose sum is σ = 203272549718784. Its totient is φ = 67012928475840.

The previous prime is 120204440455973. The next prime is 120204440456143. The reversal of 120204440456121 is 121654044402021.

120204440456121 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 0 + 44 + 40 + 456 + 121 = 666.

It is not a de Polignac number, because 120204440456121 - 2¹⁰ = 120204440455097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120204240456121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23268375361 + ... + 23268380526.

It is an arithmetic number, because the mean of its divisors is an integer number (8469689571616).

Almost surely, 2^{120204440456121} is an apocalyptic number.

It is an amenable number.

120204440456121 is a deficient number, since it is larger than the sum of its proper divisors (83068109262663).

120204440456121 is a wasteful number, since it uses less digits than its factorization.

120204440456121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46536755941 (or 46536755938 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

Adding to 120204440456121 its reverse (121654044402021), we get a palindrome (241858484858142).

The spelling of 120204440456121 in words is "one hundred twenty trillion, two hundred four billion, four hundred forty million, four hundred fifty-six thousand, one hundred twenty-one".