12400043311100 has 36 divisors (see below), whose sum is σ = 27309707342904. Its totient is φ = 4885987212480.

The previous prime is 12400043311009. The next prime is 12400043311111. The reversal of 12400043311100 is 111334000421.

It is a super-2 number, since 2×12400043311100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 925369667 + ... + 925383066.

Almost surely, 2^{12400043311100} is an apocalyptic number.

12400043311100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12400043311100 is an abundant number, since it is smaller than the sum of its proper divisors (14909664031804).

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

12400043311100 is a wasteful number, since it uses less digits than its factorization.

12400043311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850752814 (or 1850752807 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12400043311100 its reverse (111334000421), we get a palindrome (12511377311521).

The spelling of 12400043311100 in words is "twelve trillion, four hundred billion, forty-three million, three hundred eleven thousand, one hundred".