21000021111202 has 16 divisors (see below), whose sum is σ = 36150663962880. Its totient is φ = 8962352104608.

The previous prime is 21000021111161. The next prime is 21000021111229. The reversal of 21000021111202 is 20211112000012.

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, 3138075123 + ... + 3138081814.

It is an arithmetic number, because the mean of its divisors is an integer number (2259416497680).

Almost surely, 2^{21000021111202} is an apocalyptic number.

21000021111202 is a deficient number, since it is larger than the sum of its proper divisors (15150642851678).

21000021111202 is a wasteful number, since it uses less digits than its factorization.

21000021111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276157185.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21000021111202 its reverse (20211112000012), we get a palindrome (41211133111214).

The spelling of 21000021111202 in words is "twenty-one trillion, twenty-one million, one hundred eleven thousand, two hundred two".