11293221 has 8 divisors (see below), whose sum is σ = 15176704. Its totient is φ = 7469280.

The previous prime is 11293213. The next prime is 11293223. The reversal of 11293221 is 12239211.

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

It is not a de Polignac number, because 11293221 - 2³ = 11293213 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 (11293223) 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, 14440 + ... + 15201.

It is an arithmetic number, because the mean of its divisors is an integer number (1897088).

Almost surely, 2^11293221 is an apocalyptic number.

It is an amenable number.

11293221 is a deficient number, since it is larger than the sum of its proper divisors (3883483).

11293221 is a wasteful number, since it uses less digits than its factorization.

11293221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29771.

The product of its digits is 216, while the sum is 21.

The square root of 11293221 is about 3360.5387960861. The cubic root of 11293221 is about 224.3568199618.

The spelling of 11293221 in words is "eleven million, two hundred ninety-three thousand, two hundred twenty-one".