21202311902 has 8 divisors (see below), whose sum is σ = 32032270200. Its totient is φ = 10524888504.

The previous prime is 21202311901. The next prime is 21202311931. The reversal of 21202311902 is 20911320212.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202311901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38133377 + ... + 38133932.

It is an arithmetic number, because the mean of its divisors is an integer number (4004033775).

Almost surely, 2^21202311902 is an apocalyptic number.

21202311902 is a deficient number, since it is larger than the sum of its proper divisors (10829958298).

21202311902 is a wasteful number, since it uses less digits than its factorization.

21202311902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76267450.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 21202311902 in words is "twenty-one billion, two hundred two million, three hundred eleven thousand, nine hundred two".