120635536021 has 24 divisors (see below), whose sum is σ = 163199265152. Its totient is φ = 86770807200.

The previous prime is 120635535991. The next prime is 120635536139.

120635536021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 120635536021 - 2¹⁷ = 120635404949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120635536321) 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, 5466945 + ... + 5488966.

Almost surely, 2^120635536021 is an apocalyptic number.

120635536021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120635536021 is a deficient number, since it is larger than the sum of its proper divisors (42563729131).

120635536021 is a wasteful number, since it uses less digits than its factorization.

120635536021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10955953 (or 10955942 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

It can be divided in two parts, 120635 and 536021, that added together give a palindrome (656656).

The spelling of 120635536021 in words is "one hundred twenty billion, six hundred thirty-five million, five hundred thirty-six thousand, twenty-one".