12500222 has 16 divisors (see below), whose sum is σ = 21551712. Its totient is φ = 5326560.

The previous prime is 12500221. The next prime is 12500227. The reversal of 12500222 is 22200521.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12500197 and 12500206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500221) 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, 68 + ... + 5000.

It is an arithmetic number, because the mean of its divisors is an integer number (1346982).

Almost surely, 2^12500222 is an apocalyptic number.

12500222 is a deficient number, since it is larger than the sum of its proper divisors (9051490).

12500222 is a wasteful number, since it uses less digits than its factorization.

12500222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12500222 is about 3535.5653013344. The cubic root of 12500222 is about 232.0808155828.

Adding to 12500222 its reverse (22200521), we get a palindrome (34700743).

The spelling of 12500222 in words is "twelve million, five hundred thousand, two hundred twenty-two".