21022001202 has 32 divisors (see below), whose sum is σ = 44743197312. Its totient is φ = 6561653504.

The previous prime is 21022001191. The next prime is 21022001227. The reversal of 21022001202 is 20210022012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502998 + ... + 543185.

It is an arithmetic number, because the mean of its divisors is an integer number (1398224916).

Almost surely, 2^21022001202 is an apocalyptic number.

21022001202 is an abundant number, since it is smaller than the sum of its proper divisors (23721196110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022001202 is a wasteful number, since it uses less digits than its factorization.

21022001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046402.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21022001202 its reverse (20210022012), we get a palindrome (41232023214).

The spelling of 21022001202 in words is "twenty-one billion, twenty-two million, one thousand, two hundred two".