21031122410 has 32 divisors (see below), whose sum is σ = 38748378240. Its totient is φ = 8214268608.

The previous prime is 21031122379. The next prime is 21031122449. The reversal of 21031122410 is 1422113012.

21031122410 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2006744 + ... + 2017196.

It is an arithmetic number, because the mean of its divisors is an integer number (1210886820).

Almost surely, 2^21031122410 is an apocalyptic number.

21031122410 is a deficient number, since it is larger than the sum of its proper divisors (17717255830).

21031122410 is a wasteful number, since it uses less digits than its factorization.

21031122410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15182.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21031122410 its reverse (1422113012), we get a palindrome (22453235422).

The spelling of 21031122410 in words is "twenty-one billion, thirty-one million, one hundred twenty-two thousand, four hundred ten".