21350636120 has 32 divisors (see below), whose sum is σ = 52406107920. Its totient is φ = 7763867520.

The previous prime is 21350636119. The next prime is 21350636183. The reversal of 21350636120 is 2163605312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24261647 + ... + 24262526.

Almost surely, 2^21350636120 is an apocalyptic number.

21350636120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21350636120 is an abundant number, since it is smaller than the sum of its proper divisors (31055471800).

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

21350636120 is a wasteful number, since it uses less digits than its factorization.

21350636120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48524195 (or 48524191 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 21350636120 in words is "twenty-one billion, three hundred fifty million, six hundred thirty-six thousand, one hundred twenty".