21022202202 has 32 divisors (see below), whose sum is σ = 42172267200. Its totient is φ = 6986124288.

The previous prime is 21022202107. The next prime is 21022202209. The reversal of 21022202202 is 20220222012.

It is not an unprimeable number, because it can be changed into a prime (21022202209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2970324 + ... + 2977392.

It is an arithmetic number, because the mean of its divisors is an integer number (1317883350).

Almost surely, 2^21022202202 is an apocalyptic number.

21022202202 is an abundant number, since it is smaller than the sum of its proper divisors (21150064998).

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

21022202202 is a wasteful number, since it uses less digits than its factorization.

21022202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21022202202 its reverse (20220222012), we get a palindrome (41242424214).

The spelling of 21022202202 in words is "twenty-one billion, twenty-two million, two hundred two thousand, two hundred two".