11632221 has 8 divisors (see below), whose sum is σ = 17232960. Its totient is φ = 7754796.

The previous prime is 11632213. The next prime is 11632249. The reversal of 11632221 is 12223611.

11632221 is a `hidden beast` number, since 11 + 632 + 2 + 21 = 666.

It is not a de Polignac number, because 11632221 - 2³ = 11632213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11632194 and 11632203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11632121) 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, 215385 + ... + 215438.

It is an arithmetic number, because the mean of its divisors is an integer number (2154120).

Almost surely, 2^11632221 is an apocalyptic number.

It is an amenable number.

11632221 is a deficient number, since it is larger than the sum of its proper divisors (5600739).

11632221 is an equidigital number, since it uses as much as digits as its factorization.

11632221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430832 (or 430826 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 11632221 is about 3410.6041986721. The cubic root of 11632221 is about 226.5796395531.

Adding to 11632221 its reverse (12223611), we get a palindrome (23855832).

The spelling of 11632221 in words is "eleven million, six hundred thirty-two thousand, two hundred twenty-one".