23210113212 has 324 divisors, whose sum is σ = 71262716616. Its totient is φ = 6313731840.

The previous prime is 23210113193. The next prime is 23210113217. The reversal of 23210113212 is 21231101232.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210113217) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 147835038 + ... + 147835194.

Almost surely, 2^23210113212 is an apocalyptic number.

23210113212 is a gapful number since it is divisible by the number (22) 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 23210113212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35631358308).

23210113212 is an abundant number, since it is smaller than the sum of its proper divisors (48052603404).

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

23210113212 is a wasteful number, since it uses less digits than its factorization.

23210113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23210113212 its reverse (21231101232), we get a palindrome (44441214444).

The spelling of 23210113212 in words is "twenty-three billion, two hundred ten million, one hundred thirteen thousand, two hundred twelve".