21111313010 has 8 divisors (see below), whose sum is σ = 38000363436. Its totient is φ = 8444525200.

The previous prime is 21111312983. The next prime is 21111313021. The reversal of 21111313010 is 1031311112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18260927689 + 2850385321 = 135133^2 + 53389^2 .

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

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, 1055565641 + ... + 1055565660.

Almost surely, 2^21111313010 is an apocalyptic number.

21111313010 is a deficient number, since it is larger than the sum of its proper divisors (16889050426).

21111313010 is a wasteful number, since it uses less digits than its factorization.

21111313010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111131308.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21111313010 its reverse (1031311112), we get a palindrome (22142624122).

The spelling of 21111313010 in words is "twenty-one billion, one hundred eleven million, three hundred thirteen thousand, ten".