12123324400 has 60 divisors (see below), whose sum is σ = 31774142664. Its totient is φ = 4408480000.

The previous prime is 12123324383. The next prime is 12123324413. The reversal of 12123324400 is 442332121.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 1373251 + ... + 1382050.

Almost surely, 2^12123324400 is an apocalyptic number.

12123324400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123324400 is an abundant number, since it is smaller than the sum of its proper divisors (19650818264).

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

12123324400 is a wasteful number, since it uses less digits than its factorization.

12123324400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755330 (or 2755319 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12123324400 its reverse (442332121), we get a palindrome (12565656521).

The spelling of 12123324400 in words is "twelve billion, one hundred twenty-three million, three hundred twenty-four thousand, four hundred".