123200012 has 12 divisors (see below), whose sum is σ = 232184736. Its totient is φ = 56861520.

The previous prime is 123199997. The next prime is 123200017. The reversal of 123200012 is 210002321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123199966 and 123200002.

It is not an unprimeable number, because it can be changed into a prime (123200017) 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, 1184564 + ... + 1184667.

It is an arithmetic number, because the mean of its divisors is an integer number (19348728).

Almost surely, 2^123200012 is an apocalyptic number.

It is an amenable number.

123200012 is a deficient number, since it is larger than the sum of its proper divisors (108984724).

123200012 is a wasteful number, since it uses less digits than its factorization.

123200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369248 (or 2369246 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 123200012 is about 11099.5500809718. The cubic root of 123200012 is about 497.5884031013.

Adding to 123200012 its reverse (210002321), we get a palindrome (333202333).

The spelling of 123200012 in words is "one hundred twenty-three million, two hundred thousand, twelve".