13123204012 has 48 divisors (see below), whose sum is σ = 24678108000. Its totient is φ = 6087605760.

The previous prime is 13123203979. The next prime is 13123204021. The reversal of 13123204012 is 21040232131.

It is a happy number.

It is a super-2 number, since 2×13123204012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074114 + ... + 1086262.

It is an arithmetic number, because the mean of its divisors is an integer number (514127250).

Almost surely, 2^13123204012 is an apocalyptic number.

It is an amenable number.

13123204012 is a deficient number, since it is larger than the sum of its proper divisors (11554903988).

13123204012 is a wasteful number, since it uses less digits than its factorization.

13123204012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12466 (or 12464 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13123204012 its reverse (21040232131), we get a palindrome (34163436143).

The spelling of 13123204012 in words is "thirteen billion, one hundred twenty-three million, two hundred four thousand, twelve".