21002010111102 has 8 divisors (see below), whose sum is σ = 42004020222216. Its totient is φ = 7000670037032.

The previous prime is 21002010111097. The next prime is 21002010111169. The reversal of 21002010111102 is 20111101020012.

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

21002010111102 is an admirable number.

It is a congruent number.

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, 1750167509253 + ... + 1750167509264.

It is an arithmetic number, because the mean of its divisors is an integer number (5250502527777).

Almost surely, 2^{21002010111102} is an apocalyptic number.

21002010111102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21002010111102 is a wasteful number, since it uses less digits than its factorization.

21002010111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500335018522.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21002010111102 its reverse (20111101020012), we get a palindrome (41113111131114).

The spelling of 21002010111102 in words is "twenty-one trillion, two billion, ten million, one hundred eleven thousand, one hundred two".