21002131302 has 8 divisors (see below), whose sum is σ = 42004262616. Its totient is φ = 7000710432.

The previous prime is 21002131291. The next prime is 21002131331. The reversal of 21002131302 is 20313120012.

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

21002131302 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750177603 + ... + 1750177614.

It is an arithmetic number, because the mean of its divisors is an integer number (5250532827).

Almost surely, 2^21002131302 is an apocalyptic number.

21002131302 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.

21002131302 is a wasteful number, since it uses less digits than its factorization.

21002131302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500355222.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21002131302 its reverse (20313120012), we get a palindrome (41315251314).

The spelling of 21002131302 in words is "twenty-one billion, two million, one hundred thirty-one thousand, three hundred two".