21201012202 has 16 divisors (see below), whose sum is σ = 32593767552. Its totient is φ = 10338028960.

The previous prime is 21201012199. The next prime is 21201012233. The reversal of 21201012202 is 20221010212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374908 + ... + 427735.

It is an arithmetic number, because the mean of its divisors is an integer number (2037110472).

Almost surely, 2^21201012202 is an apocalyptic number.

21201012202 is a deficient number, since it is larger than the sum of its proper divisors (11392755350).

21201012202 is a wasteful number, since it uses less digits than its factorization.

21201012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802973.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21201012202 its reverse (20221010212), we get a palindrome (41422022414).

The spelling of 21201012202 in words is "twenty-one billion, two hundred one million, twelve thousand, two hundred two".