21232313106 has 64 divisors (see below), whose sum is σ = 44493926400. Its totient is φ = 6746875200.

The previous prime is 21232313099. The next prime is 21232313117. The reversal of 21232313106 is 60131323212.

It is a super-2 number, since 2×21232313106² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3383740 + ... + 3390008.

It is an arithmetic number, because the mean of its divisors is an integer number (695217600).

Almost surely, 2^21232313106 is an apocalyptic number.

21232313106 is an abundant number, since it is smaller than the sum of its proper divisors (23261613294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232313106 is a wasteful number, since it uses less digits than its factorization.

21232313106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21232313106 its reverse (60131323212), we get a palindrome (81363636318).

The spelling of 21232313106 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirteen thousand, one hundred six".