123212133100 has 72 divisors (see below), whose sum is σ = 307117530720. Its totient is φ = 42029675520.

The previous prime is 123212133053. The next prime is 123212133119. The reversal of 123212133100 is 1331212321.

It is a super-2 number, since 2×123212133100² (a number of 23 digits) contains 22 as substring.

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, 308845 + ... + 584644.

It is an arithmetic number, because the mean of its divisors is an integer number (4265521260).

Almost surely, 2^123212133100 is an apocalyptic number.

123212133100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123212133100 is an abundant number, since it is smaller than the sum of its proper divisors (183905397620).

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

123212133100 is a wasteful number, since it uses less digits than its factorization.

123212133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893707 (or 893700 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123212133100 its reverse (1331212321), we get a palindrome (124543345421).

The spelling of 123212133100 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred thirty-three thousand, one hundred".