13001222 has 32 divisors (see below), whose sum is σ = 22286880. Its totient is φ = 5644800.

The previous prime is 13001213. The next prime is 13001237. The reversal of 13001222 is 22210031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32222 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (696465).

Almost surely, 2^13001222 is an apocalyptic number.

13001222 is a deficient number, since it is larger than the sum of its proper divisors (9285658).

13001222 is a wasteful number, since it uses less digits than its factorization.

13001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 13001222 is about 3605.7207323918. The cubic root of 13001222 is about 235.1408360566.

Adding to 13001222 its reverse (22210031), we get a palindrome (35211253).

The spelling of 13001222 in words is "thirteen million, one thousand, two hundred twenty-two".