13037221 has 8 divisors (see below), whose sum is σ = 13406400. Its totient is φ = 12670560.

The previous prime is 13037207. The next prime is 13037231. The reversal of 13037221 is 12273031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13037221 - 2⁷ = 13037093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13037231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15120 + ... + 15958.

It is an arithmetic number, because the mean of its divisors is an integer number (1675800).

Almost surely, 2^13037221 is an apocalyptic number.

It is an amenable number.

13037221 is a deficient number, since it is larger than the sum of its proper divisors (369179).

13037221 is an equidigital number, since it uses as much as digits as its factorization.

13037221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 13037221 is about 3610.7092101137. The cubic root of 13037221 is about 235.3576627059.

The spelling of 13037221 in words is "thirteen million, thirty-seven thousand, two hundred twenty-one".