23202223212 has 96 divisors (see below), whose sum is σ = 62940774400. Its totient is φ = 6515525952.

The previous prime is 23202223211. The next prime is 23202223223. The reversal of 23202223212 is 21232220232.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23202223211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1471989 + ... + 1487667.

Almost surely, 2^23202223212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23202223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31470387200).

23202223212 is an abundant number, since it is smaller than the sum of its proper divisors (39738551188).

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

23202223212 is a wasteful number, since it uses less digits than its factorization.

23202223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15995 (or 15993 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23202223212 its reverse (21232220232), we get a palindrome (44434443444).

The spelling of 23202223212 in words is "twenty-three billion, two hundred two million, two hundred twenty-three thousand, two hundred twelve".