12123401200 has 60 divisors (see below), whose sum is σ = 30392862768. Its totient is φ = 4638515200.

The previous prime is 12123401113. The next prime is 12123401201. The reversal of 12123401200 is 210432121.

It is a super-2 number, since 2×12123401200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123401201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649681 + ... + 668080.

Almost surely, 2^12123401200 is an apocalyptic number.

12123401200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123401200 is an abundant number, since it is smaller than the sum of its proper divisors (18269461568).

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

12123401200 is a wasteful number, since it uses less digits than its factorization.

12123401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317802 (or 1317791 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12123401200 its reverse (210432121), we get a palindrome (12333833321).

The spelling of 12123401200 in words is "twelve billion, one hundred twenty-three million, four hundred one thousand, two hundred".