21297570002 has 8 divisors (see below), whose sum is σ = 32124826800. Its totient is φ = 10589294404.

The previous prime is 21297569977. The next prime is 21297570013. The reversal of 21297570002 is 20007579212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29744852 + ... + 29745567.

It is an arithmetic number, because the mean of its divisors is an integer number (4015603350).

Almost surely, 2^21297570002 is an apocalyptic number.

21297570002 is a deficient number, since it is larger than the sum of its proper divisors (10827256798).

21297570002 is a wasteful number, since it uses less digits than its factorization.

21297570002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59490600.

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 21297570002 in words is "twenty-one billion, two hundred ninety-seven million, five hundred seventy thousand, two".