12999222 has 24 divisors (see below), whose sum is σ = 28629120. Its totient is φ = 4261680.

The previous prime is 12999193. The next prime is 12999223. The reversal of 12999222 is 22299921.

12999222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4822 + ... + 7017.

It is an arithmetic number, because the mean of its divisors is an integer number (1192880).

Almost surely, 2^12999222 is an apocalyptic number.

12999222 is an abundant number, since it is smaller than the sum of its proper divisors (15629898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12999222 is a wasteful number, since it uses less digits than its factorization.

12999222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11908 (or 11905 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 12999222 is about 3605.4433846616. The cubic root of 12999222 is about 235.1287780673.

The spelling of 12999222 in words is "twelve million, nine hundred ninety-nine thousand, two hundred twenty-two".