21002130200311 has 4 divisors (see below), whose sum is σ = 22617678677272. Its totient is φ = 19386581723352.

The previous prime is 21002130200273. The next prime is 21002130200369. The reversal of 21002130200311 is 11300203120012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21002130200311 - 2²³ = 21002121811703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002130200371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807774238461 + ... + 807774238486.

It is an arithmetic number, because the mean of its divisors is an integer number (5654419669318).

Almost surely, 2^{21002130200311} is an apocalyptic number.

21002130200311 is a deficient number, since it is larger than the sum of its proper divisors (1615548476961).

21002130200311 is a wasteful number, since it uses less digits than its factorization.

21002130200311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615548476960.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21002130200311 its reverse (11300203120012), we get a palindrome (32302333320323).

The spelling of 21002130200311 in words is "twenty-one trillion, two billion, one hundred thirty million, two hundred thousand, three hundred eleven".