13312222 has 48 divisors (see below), whose sum is σ = 25929072. Its totient is φ = 5066880.

The previous prime is 13312199. The next prime is 13312231. The reversal of 13312222 is 22221331.

13312222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13312196 and 13312205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57018 + ... + 57250.

It is an arithmetic number, because the mean of its divisors is an integer number (540189).

Almost surely, 2^13312222 is an apocalyptic number.

13312222 is a deficient number, since it is larger than the sum of its proper divisors (12616850).

13312222 is a wasteful number, since it uses less digits than its factorization.

13312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 306 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 13312222 is about 3648.5917831404. The cubic root of 13312222 is about 237.0010029215.

Adding to 13312222 its reverse (22221331), we get a palindrome (35533553).

It can be divided in two parts, 1331 and 2222, that added together give a palindrome (3553).

The spelling of 13312222 in words is "thirteen million, three hundred twelve thousand, two hundred twenty-two".