11252221 has 8 divisors (see below), whose sum is σ = 11830464. Its totient is φ = 10681440.

The previous prime is 11252209. The next prime is 11252239. The reversal of 11252221 is 12225211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11252221 is a prime.

It is a super-2 number, since 2×11252221² = 253224954865682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11252195 and 11252204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11252251) 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, 1366 + ... + 4936.

It is an arithmetic number, because the mean of its divisors is an integer number (1478808).

Almost surely, 2^11252221 is an apocalyptic number.

It is an amenable number.

11252221 is a deficient number, since it is larger than the sum of its proper divisors (578243).

11252221 is a wasteful number, since it uses less digits than its factorization.

11252221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731.

The product of its digits is 80, while the sum is 16.

The square root of 11252221 is about 3354.4330370422. The cubic root of 11252221 is about 224.0849818390.

Adding to 11252221 its reverse (12225211), we get a palindrome (23477432).

The spelling of 11252221 in words is "eleven million, two hundred fifty-two thousand, two hundred twenty-one".