13222863 has 12 divisors (see below), whose sum is σ = 19147128. Its totient is φ = 8793360.

The previous prime is 13222849. The next prime is 13222871. The reversal of 13222863 is 36822231.

It is not a de Polignac number, because 13222863 - 2¹⁷ = 13091791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2556 + ... + 5742.

It is an arithmetic number, because the mean of its divisors is an integer number (1595594).

Almost surely, 2^13222863 is an apocalyptic number.

13222863 is a deficient number, since it is larger than the sum of its proper divisors (5924265).

13222863 is a wasteful number, since it uses less digits than its factorization.

13222863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654 (or 3651 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13222863 is about 3636.3254804816. The cubic root of 13222863 is about 236.4695179781.

The spelling of 13222863 in words is "thirteen million, two hundred twenty-two thousand, eight hundred sixty-three".