21321974702 has 32 divisors (see below), whose sum is σ = 38819139840. Its totient is φ = 8574445440.

The previous prime is 21321974701. The next prime is 21321974731. The reversal of 21321974702 is 20747912312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321974701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56552 + ... + 214107.

It is an arithmetic number, because the mean of its divisors is an integer number (1213098120).

Almost surely, 2^21321974702 is an apocalyptic number.

21321974702 is a deficient number, since it is larger than the sum of its proper divisors (17497165138).

21321974702 is a wasteful number, since it uses less digits than its factorization.

21321974702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271016.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 21321974702 in words is "twenty-one billion, three hundred twenty-one million, nine hundred seventy-four thousand, seven hundred two".