12550222 has 16 divisors (see below), whose sum is σ = 20240640. Its totient is φ = 5817528.

The previous prime is 12550183. The next prime is 12550229. The reversal of 12550222 is 22205521.

12550222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12550222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550229) 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, 1728 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (1265040).

Almost surely, 2^12550222 is an apocalyptic number.

12550222 is a deficient number, since it is larger than the sum of its proper divisors (7690418).

12550222 is a wasteful number, since it uses less digits than its factorization.

12550222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12550222 is about 3542.6292495829. The cubic root of 12550222 is about 232.3898395156.

Adding to 12550222 its reverse (22205521), we get a palindrome (34755743).

The spelling of 12550222 in words is "twelve million, five hundred fifty thousand, two hundred twenty-two".