21912679202 has 8 divisors (see below), whose sum is σ = 32888370000. Its totient is φ = 10949889204.

The previous prime is 21912679169. The next prime is 21912679249. The reversal of 21912679202 is 20297621912.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21912679202.

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, 3220952 + ... + 3227747.

It is an arithmetic number, because the mean of its divisors is an integer number (4111046250).

Almost surely, 2^21912679202 is an apocalyptic number.

21912679202 is a deficient number, since it is larger than the sum of its proper divisors (10975690798).

21912679202 is a wasteful number, since it uses less digits than its factorization.

21912679202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450400.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 21912679202 in words is "twenty-one billion, nine hundred twelve million, six hundred seventy-nine thousand, two hundred two".