21000100102202 has 64 divisors (see below), whose sum is σ = 35100170649600. Its totient is φ = 9357575336640.

The previous prime is 21000100102181. The next prime is 21000100102237. The reversal of 21000100102202 is 20220100100012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1773800999 + ... + 1773812837.

It is an arithmetic number, because the mean of its divisors is an integer number (548440166400).

Almost surely, 2^{21000100102202} is an apocalyptic number.

21000100102202 is a deficient number, since it is larger than the sum of its proper divisors (14100070547398).

21000100102202 is a wasteful number, since it uses less digits than its factorization.

21000100102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21000100102202 its reverse (20220100100012), we get a palindrome (41220200202214).

The spelling of 21000100102202 in words is "twenty-one trillion, one hundred million, one hundred two thousand, two hundred two".