13221093 has 16 divisors (see below), whose sum is σ = 18682880. Its totient is φ = 8293104.

The previous prime is 13221083. The next prime is 13221101. The reversal of 13221093 is 39012231.

It is a happy number.

It is not a de Polignac number, because 13221093 - 2⁴ = 13221077 is a prime.

It is a super-2 number, since 2×13221093² = 349594600229298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8580 + ... + 10002.

It is an arithmetic number, because the mean of its divisors is an integer number (1167680).

Almost surely, 2^13221093 is an apocalyptic number.

It is an amenable number.

13221093 is a deficient number, since it is larger than the sum of its proper divisors (5461787).

13221093 is a wasteful number, since it uses less digits than its factorization.

13221093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13221093 is about 3636.0820947828. The cubic root of 13221093 is about 236.4589663116.

It can be divided in two parts, 1322 and 1093, that added together give a triangular number (2415 = T₆₉).

The spelling of 13221093 in words is "thirteen million, two hundred twenty-one thousand, ninety-three".