23331221010 has 24 divisors (see below), whose sum is σ = 60661174860. Its totient is φ = 6221658912.

The previous prime is 23331221009. The next prime is 23331221059. The reversal of 23331221010 is 1012213332.

It can be written as a sum of positive squares in 2 ways, for example, as 23254115049 + 77105961 = 152493^2 + 8781^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 129617805 + ... + 129617984.

Almost surely, 2^23331221010 is an apocalyptic number.

23331221010 is an abundant number, since it is smaller than the sum of its proper divisors (37329953850).

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

23331221010 is a wasteful number, since it uses less digits than its factorization.

23331221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259235802 (or 259235799 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23331221010 its reverse (1012213332), we get a palindrome (24343434342).

The spelling of 23331221010 in words is "twenty-three billion, three hundred thirty-one million, two hundred twenty-one thousand, ten".