23223212012 has 72 divisors (see below), whose sum is σ = 54979914528. Its totient is φ = 8351988480.

The previous prime is 23223212009. The next prime is 23223212027. The reversal of 23223212012 is 21021232232.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219593 + ... + 307680.

It is an arithmetic number, because the mean of its divisors is an integer number (763609924).

Almost surely, 2^23223212012 is an apocalyptic number.

23223212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23223212012 is an abundant number, since it is smaller than the sum of its proper divisors (31756702516).

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

23223212012 is a wasteful number, since it uses less digits than its factorization.

23223212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527319 (or 527306 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23223212012 its reverse (21021232232), we get a palindrome (44244444244).

The spelling of 23223212012 in words is "twenty-three billion, two hundred twenty-three million, two hundred twelve thousand, twelve".