21259932802 has 8 divisors (see below), whose sum is σ = 31920595200. Its totient is φ = 10619734404.

The previous prime is 21259932791. The next prime is 21259932821. The reversal of 21259932802 is 20823995212.

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, 5113402 + ... + 5117557.

It is an arithmetic number, because the mean of its divisors is an integer number (3990074400).

Almost surely, 2^21259932802 is an apocalyptic number.

21259932802 is a deficient number, since it is larger than the sum of its proper divisors (10660662398).

21259932802 is a wasteful number, since it uses less digits than its factorization.

21259932802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10232000.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 21259932802 in words is "twenty-one billion, two hundred fifty-nine million, nine hundred thirty-two thousand, eight hundred two".