11227881 has 8 divisors (see below), whose sum is σ = 17109184. Its totient is φ = 6415920.

The previous prime is 11227861. The next prime is 11227883. The reversal of 11227881 is 18872211.

It is a happy number.

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

It is not a de Polignac number, because 11227881 - 2⁵ = 11227849 is a prime.

It is a super-2 number, since 2×11227881² = 252130623500322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11227883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267310 + ... + 267351.

It is an arithmetic number, because the mean of its divisors is an integer number (2138648).

Almost surely, 2^11227881 is an apocalyptic number.

It is an amenable number.

11227881 is a deficient number, since it is larger than the sum of its proper divisors (5881303).

11227881 is an equidigital number, since it uses as much as digits as its factorization.

11227881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534671.

The product of its digits is 1792, while the sum is 30.

The square root of 11227881 is about 3350.8030380791. The cubic root of 11227881 is about 223.9232903257.

The spelling of 11227881 in words is "eleven million, two hundred twenty-seven thousand, eight hundred eighty-one".