21202022112202 has 16 divisors (see below), whose sum is σ = 33674174648712. Its totient is φ = 9977311111680.

The previous prime is 21202022112191. The next prime is 21202022112241. The reversal of 21202022112202 is 20221122020212.

It can be written as a sum of positive squares in 4 ways, for example, as 20941249497921 + 260772614281 = 4576161^2 + 510659^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21202022112202.

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, 329949 + ... + 6520192.

Almost surely, 2^{21202022112202} is an apocalyptic number.

21202022112202 is a deficient number, since it is larger than the sum of its proper divisors (12472152536510).

21202022112202 is a wasteful number, since it uses less digits than its factorization.

21202022112202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941193.

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

Adding to 21202022112202 its reverse (20221122020212), we get a palindrome (41423144132414).

The spelling of 21202022112202 in words is "twenty-one trillion, two hundred two billion, twenty-two million, one hundred twelve thousand, two hundred two".