21310036600 has 48 divisors (see below), whose sum is σ = 49707365400. Its totient is φ = 8496224640.

The previous prime is 21310036529. The next prime is 21310036633. The reversal of 21310036600 is 663001312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112135 + ... + 234934.

Almost surely, 2^21310036600 is an apocalyptic number.

21310036600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310036600 is an abundant number, since it is smaller than the sum of its proper divisors (28397328800).

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

21310036600 is a wasteful number, since it uses less digits than its factorization.

21310036600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347392 (or 347383 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21310036600 its reverse (663001312), we get a palindrome (21973037912).

The spelling of 21310036600 in words is "twenty-one billion, three hundred ten million, thirty-six thousand, six hundred".