23230021212 has 48 divisors (see below), whose sum is σ = 63768690720. Its totient is φ = 7287849216.

The previous prime is 23230021201. The next prime is 23230021259. The reversal of 23230021212 is 21212003232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6324423 + ... + 6328094.

It is an arithmetic number, because the mean of its divisors is an integer number (1328514390).

Almost surely, 2^23230021212 is an apocalyptic number.

It is an amenable number.

23230021212 is an abundant number, since it is smaller than the sum of its proper divisors (40538669508).

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

23230021212 is a wasteful number, since it uses less digits than its factorization.

23230021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652547 (or 12652539 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23230021212 its reverse (21212003232), we get a palindrome (44442024444).

The spelling of 23230021212 in words is "twenty-three billion, two hundred thirty million, twenty-one thousand, two hundred twelve".