21022102212202 has 32 divisors (see below), whose sum is σ = 38810369025792. Its totient is φ = 8316364431744.

The previous prime is 21022102212179. The next prime is 21022102212229. The reversal of 21022102212202 is 20221220122012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022102212202.

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, 24005718 + ... + 24866014.

It is an arithmetic number, because the mean of its divisors is an integer number (1212824032056).

Almost surely, 2^{21022102212202} is an apocalyptic number.

21022102212202 is a deficient number, since it is larger than the sum of its proper divisors (17788266813590).

21022102212202 is a wasteful number, since it uses less digits than its factorization.

21022102212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994582.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21022102212202 its reverse (20221220122012), we get a palindrome (41243322334214).

The spelling of 21022102212202 in words is "twenty-one trillion, twenty-two billion, one hundred two million, two hundred twelve thousand, two hundred two".