21153679202 has 8 divisors (see below), whose sum is σ = 31863283200. Its totient is φ = 10532584804.

The previous prime is 21153679201. The next prime is 21153679229. The reversal of 21153679202 is 20297635112.

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

It is a super-2 number, since 2×21153679202² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21153679201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22126802 + ... + 22127757.

It is an arithmetic number, because the mean of its divisors is an integer number (3982910400).

Almost surely, 2^21153679202 is an apocalyptic number.

21153679202 is a deficient number, since it is larger than the sum of its proper divisors (10709603998).

21153679202 is a wasteful number, since it uses less digits than its factorization.

21153679202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44254800.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 21153679202 in words is "twenty-one billion, one hundred fifty-three million, six hundred seventy-nine thousand, two hundred two".