21002111102202 has 8 divisors (see below), whose sum is σ = 42004222204416. Its totient is φ = 7000703700732.

The previous prime is 21002111101973. The next prime is 21002111102233. The reversal of 21002111102202 is 20220111120012.

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

21002111102202 is an admirable 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, 1750175925178 + ... + 1750175925189.

It is an arithmetic number, because the mean of its divisors is an integer number (5250527775552).

Almost surely, 2^{21002111102202} is an apocalyptic number.

21002111102202 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.

21002111102202 is a wasteful number, since it uses less digits than its factorization.

21002111102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500351850372.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21002111102202 its reverse (20220111120012), we get a palindrome (41222222222214).

The spelling of 21002111102202 in words is "twenty-one trillion, two billion, one hundred eleven million, one hundred two thousand, two hundred two".