21102200022202 has 16 divisors (see below), whose sum is σ = 34646991716232. Its totient is φ = 9579813376320.

The previous prime is 21102200022193. The next prime is 21102200022283. The reversal of 21102200022202 is 20222000220112.

It can be written as a sum of positive squares in 4 ways, for example, as 10880425505401 + 10221774516801 = 3298549^2 + 3197151^2 .

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, 6652646593 + ... + 6652649764.

Almost surely, 2^{21102200022202} is an apocalyptic number.

21102200022202 is a deficient number, since it is larger than the sum of its proper divisors (13544791694030).

21102200022202 is a wasteful number, since it uses less digits than its factorization.

21102200022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305296433.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21102200022202 its reverse (20222000220112), we get a palindrome (41324200242314).

The spelling of 21102200022202 in words is "twenty-one trillion, one hundred two billion, two hundred million, twenty-two thousand, two hundred two".