200123126512 has 40 divisors (see below), whose sum is σ = 399977071952. Its totient is φ = 96952204800.

The previous prime is 200123126509. The next prime is 200123126519. The reversal of 200123126512 is 215621321002.

It is a super-2 number, since 2×200123126512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200123126519) 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, 1464789 + ... + 1595572.

Almost surely, 2^200123126512 is an apocalyptic number.

It is an amenable number.

200123126512 is a deficient number, since it is larger than the sum of its proper divisors (199853945440).

200123126512 is a wasteful number, since it uses less digits than its factorization.

200123126512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060497 (or 3060491 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 200123126512 its reverse (215621321002), we get a palindrome (415744447514).

The spelling of 200123126512 in words is "two hundred billion, one hundred twenty-three million, one hundred twenty-six thousand, five hundred twelve".