12510400124 has 12 divisors (see below), whose sum is σ = 21929754000. Its totient is φ = 6244756128.

The previous prime is 12510400081. The next prime is 12510400129. The reversal of 12510400124 is 42100401521.

It is a happy number.

It is a super-2 number, since 2×12510400124² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12510400096 and 12510400105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12510400129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2608289 + ... + 2613080.

It is an arithmetic number, because the mean of its divisors is an integer number (1827479500).

Almost surely, 2^12510400124 is an apocalyptic number.

It is an amenable number.

12510400124 is a deficient number, since it is larger than the sum of its proper divisors (9419353876).

12510400124 is a wasteful number, since it uses less digits than its factorization.

12510400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221972 (or 5221970 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 12510400124 its reverse (42100401521), we get a palindrome (54610801645).

The spelling of 12510400124 in words is "twelve billion, five hundred ten million, four hundred thousand, one hundred twenty-four".