21313313102 has 8 divisors (see below), whose sum is σ = 32286504312. Its totient is φ = 10551145000.

The previous prime is 21313313081. The next prime is 21313313111. The reversal of 21313313102 is 20131331312.

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

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, 52755524 + ... + 52755927.

It is an arithmetic number, because the mean of its divisors is an integer number (4035813039).

Almost surely, 2^21313313102 is an apocalyptic number.

21313313102 is a deficient number, since it is larger than the sum of its proper divisors (10973191210).

21313313102 is a wasteful number, since it uses less digits than its factorization.

21313313102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105511554.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21313313102 its reverse (20131331312), we get a palindrome (41444644414).

It can be divided in two parts, 2131331310 and 2, that added together give a palindrome (2131331312).

The spelling of 21313313102 in words is "twenty-one billion, three hundred thirteen million, three hundred thirteen thousand, one hundred two".