23212012020 has 96 divisors (see below), whose sum is σ = 65922834432. Its totient is φ = 6101923968.

The previous prime is 23212011997. The next prime is 23212012081. The reversal of 23212012020 is 2021021232.

It is a happy number.

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

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 31 ways as a sum of consecutive naturals, for example, 1369719 + ... + 1386561.

It is an arithmetic number, because the mean of its divisors is an integer number (686696192).

Almost surely, 2^23212012020 is an apocalyptic number.

23212012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23212012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32961417216).

23212012020 is an abundant number, since it is smaller than the sum of its proper divisors (42710822412).

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

23212012020 is a wasteful number, since it uses less digits than its factorization.

23212012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17181 (or 17179 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23212012020 its reverse (2021021232), we get a palindrome (25233033252).

The spelling of 23212012020 in words is "twenty-three billion, two hundred twelve million, twelve thousand, twenty".