20213231110 has 32 divisors (see below), whose sum is σ = 36634695552. Its totient is φ = 8029664640.

The previous prime is 20213231099. The next prime is 20213231113. The reversal of 20213231110 is 1113231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213231113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1391907 + ... + 1406353.

It is an arithmetic number, because the mean of its divisors is an integer number (1144834236).

Almost surely, 2^20213231110 is an apocalyptic number.

20213231110 is a deficient number, since it is larger than the sum of its proper divisors (16421464442).

20213231110 is a wasteful number, since it uses less digits than its factorization.

20213231110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15408.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20213231110 its reverse (1113231202), we get a palindrome (21326462312).

The spelling of 20213231110 in words is "twenty billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred ten".