21102211102202 has 8 divisors (see below), whose sum is σ = 31653502974516. Its totient is φ = 10551043444032.

The previous prime is 21102211102187. The next prime is 21102211102211. The reversal of 21102211102202 is 20220111220112.

It can be written as a sum of positive squares in 2 ways, for example, as 20032329111001 + 1069881991201 = 4475749^2 + 1034351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30627653 + ... + 31309064.

Almost surely, 2^{21102211102202} is an apocalyptic number.

21102211102202 is a deficient number, since it is larger than the sum of its proper divisors (10551291872314).

21102211102202 is a wasteful number, since it uses less digits than its factorization.

21102211102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62107072.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21102211102202 its reverse (20220111220112), we get a palindrome (41322322322314).

The spelling of 21102211102202 in words is "twenty-one trillion, one hundred two billion, two hundred eleven million, one hundred two thousand, two hundred two".