23212455100 has 36 divisors (see below), whose sum is σ = 50680087864. Its totient is φ = 9228012480.

The previous prime is 23212455043. The next prime is 23212455113. The reversal of 23212455100 is 155421232.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695739 + ... + 728338.

Almost surely, 2^23212455100 is an apocalyptic number.

23212455100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23212455100 is an abundant number, since it is smaller than the sum of its proper divisors (27467632764).

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

23212455100 is a wasteful number, since it uses less digits than its factorization.

23212455100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424254 (or 1424247 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 23212455100 its reverse (155421232), we get a palindrome (23367876332).

The spelling of 23212455100 in words is "twenty-three billion, two hundred twelve million, four hundred fifty-five thousand, one hundred".