13166222 has 4 divisors (see below), whose sum is σ = 19749336. Its totient is φ = 6583110.

The previous prime is 13166201. The next prime is 13166233. The reversal of 13166222 is 22266131.

13166222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22266131 = 43 ⋅517817.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3291554 + ... + 3291557.

It is an arithmetic number, because the mean of its divisors is an integer number (4937334).

Almost surely, 2^13166222 is an apocalyptic number.

13166222 is a deficient number, since it is larger than the sum of its proper divisors (6583114).

13166222 is an equidigital number, since it uses as much as digits as its factorization.

13166222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583113.

The product of its digits is 864, while the sum is 23.

The square root of 13166222 is about 3628.5289030129. The cubic root of 13166222 is about 236.1313904960.

Subtracting 13166222 from its reverse (22266131), we obtain a palindrome (9099909).

The spelling of 13166222 in words is "thirteen million, one hundred sixty-six thousand, two hundred twenty-two".