23021221110 has 16 divisors (see below), whose sum is σ = 55250930736. Its totient is φ = 6138992288.

The previous prime is 23021221081. The next prime is 23021221133. The reversal of 23021221110 is 1112212032.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23021221110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383686989 + ... + 383687048.

It is an arithmetic number, because the mean of its divisors is an integer number (3453183171).

Almost surely, 2^23021221110 is an apocalyptic number.

23021221110 is an abundant number, since it is smaller than the sum of its proper divisors (32229709626).

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

23021221110 is a wasteful number, since it uses less digits than its factorization.

23021221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767374047.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 23021221110 its reverse (1112212032), we get a palindrome (24133433142).

The spelling of 23021221110 in words is "twenty-three billion, twenty-one million, two hundred twenty-one thousand, one hundred ten".