23313212220 has 24 divisors (see below), whose sum is σ = 65276994384. Its totient is φ = 6216856576.

The previous prime is 23313212207. The next prime is 23313212231. The reversal of 23313212220 is 2221231332.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194276709 + ... + 194276828.

It is an arithmetic number, because the mean of its divisors is an integer number (2719874766).

Almost surely, 2^23313212220 is an apocalyptic number.

23313212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23313212220 is an abundant number, since it is smaller than the sum of its proper divisors (41963782164).

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

23313212220 is a wasteful number, since it uses less digits than its factorization.

23313212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388553549 (or 388553547 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23313212220 its reverse (2221231332), we get a palindrome (25534443552).

The spelling of 23313212220 in words is "twenty-three billion, three hundred thirteen million, two hundred twelve thousand, two hundred twenty".