12549222 has 32 divisors (see below), whose sum is σ = 31872000. Its totient is φ = 3585384.

The previous prime is 12549217. The next prime is 12549223. The reversal of 12549222 is 22294521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16222 + ... + 16977.

It is an arithmetic number, because the mean of its divisors is an integer number (996000).

Almost surely, 2^12549222 is an apocalyptic number.

12549222 is an abundant number, since it is smaller than the sum of its proper divisors (19322778).

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

12549222 is a wasteful number, since it uses less digits than its factorization.

12549222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33217 (or 33211 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12549222 is about 3542.4881086604. The cubic root of 12549222 is about 232.3836670879.

The spelling of 12549222 in words is "twelve million, five hundred forty-nine thousand, two hundred twenty-two".