120021383636 has 24 divisors (see below), whose sum is σ = 261864837696. Its totient is φ = 46761577920.

The previous prime is 120021383611. The next prime is 120021383663. The reversal of 120021383636 is 636383120021.

120021383636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 120021383596 and 120021383605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194839601 + ... + 194840216.

It is an arithmetic number, because the mean of its divisors is an integer number (10911034904).

Almost surely, 2^120021383636 is an apocalyptic number.

It is an amenable number.

120021383636 is an abundant number, since it is smaller than the sum of its proper divisors (141843454060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120021383636 is a wasteful number, since it uses less digits than its factorization.

120021383636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389679839 (or 389679837 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 120021383636 in words is "one hundred twenty billion, twenty-one million, three hundred eighty-three thousand, six hundred thirty-six".