21210600572 has 12 divisors (see below), whose sum is σ = 42421201200. Its totient is φ = 9090257376.

The previous prime is 21210600571. The next prime is 21210600599. The reversal of 21210600572 is 27500601212.

21210600572 is an admirable number.

It is a super-3 number, since 3×21210600572³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210600571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378760697 + ... + 378760752.

It is an arithmetic number, because the mean of its divisors is an integer number (3535100100).

Almost surely, 2^21210600572 is an apocalyptic number.

It is an amenable number.

21210600572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21210600572 is a wasteful number, since it uses less digits than its factorization.

21210600572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757521460 (or 757521458 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 21210600572 in words is "twenty-one billion, two hundred ten million, six hundred thousand, five hundred seventy-two".