23311122220 has 12 divisors (see below), whose sum is σ = 48953356704. Its totient is φ = 9324448880.

The previous prime is 23311122217. The next prime is 23311122269. The reversal of 23311122220 is 2222111332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582778036 + ... + 582778075.

It is an arithmetic number, because the mean of its divisors is an integer number (4079446392).

Almost surely, 2^23311122220 is an apocalyptic number.

23311122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311122220 is an abundant number, since it is smaller than the sum of its proper divisors (25642234484).

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

23311122220 is a wasteful number, since it uses less digits than its factorization.

23311122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165556120 (or 1165556118 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23311122220 its reverse (2222111332), we get a palindrome (25533233552).

It can be divided in two parts, 2331112 and 2220, that added together give a palindrome (2333332).

The spelling of 23311122220 in words is "twenty-three billion, three hundred eleven million, one hundred twenty-two thousand, two hundred twenty".