23212220020 has 48 divisors (see below), whose sum is σ = 55010793600. Its totient is φ = 8149742720.

The previous prime is 23212219999. The next prime is 23212220027. The reversal of 23212220020 is 2002221232.

It is a junction number, because it is equal to n+sod(n) for n = 23212219976 and 23212220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212220027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812760 + ... + 1825519.

It is an arithmetic number, because the mean of its divisors is an integer number (1146058200).

Almost surely, 2^23212220020 is an apocalyptic number.

23212220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23212220020 is an abundant number, since it is smaller than the sum of its proper divisors (31798573580).

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

23212220020 is a wasteful number, since it uses less digits than its factorization.

23212220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638328 (or 3638326 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 23212220020 its reverse (2002221232), we get a palindrome (25214441252).

The spelling of 23212220020 in words is "twenty-three billion, two hundred twelve million, two hundred twenty thousand, twenty".