12043400122 has 16 divisors (see below), whose sum is σ = 19468118880. Its totient is φ = 5554665072.

The previous prime is 12043400107. The next prime is 12043400123. The reversal of 12043400122 is 22100434021.

It is a super-2 number, since 2×12043400122² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12043400122.

It is not an unprimeable number, because it can be changed into a prime (12043400123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120808 + ... + 196675.

It is an arithmetic number, because the mean of its divisors is an integer number (1216757430).

Almost surely, 2^12043400122 is an apocalyptic number.

12043400122 is a deficient number, since it is larger than the sum of its proper divisors (7424718758).

12043400122 is a wasteful number, since it uses less digits than its factorization.

12043400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318957.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12043400122 its reverse (22100434021), we get a palindrome (34143834143).

The spelling of 12043400122 in words is "twelve billion, forty-three million, four hundred thousand, one hundred twenty-two".