21313233110 has 64 divisors (see below), whose sum is σ = 41820408000. Its totient is φ = 7773580800.

The previous prime is 21313233083. The next prime is 21313233121. The reversal of 21313233110 is 1133231312.

It is a congruent number.

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, 6550244 + ... + 6553496.

It is an arithmetic number, because the mean of its divisors is an integer number (653443875).

Almost surely, 2^21313233110 is an apocalyptic number.

21313233110 is a deficient number, since it is larger than the sum of its proper divisors (20507174890).

21313233110 is a wasteful number, since it uses less digits than its factorization.

21313233110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873.

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

Adding to 21313233110 its reverse (1133231312), we get a palindrome (22446464422).

The spelling of 21313233110 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty-three thousand, one hundred ten".