11881120 has 24 divisors (see below), whose sum is σ = 28069524. Its totient is φ = 4752384.

The previous prime is 11881117. The next prime is 11881123. The reversal of 11881120 is 2118811.

It is an interprime number because it is at equal distance from previous prime (11881117) and next prime (11881123).

It can be written as a sum of positive squares in 2 ways, for example, as 9909904 + 1971216 = 3148^2 + 1404^2 .

It is a super-2 number, since 2×11881120² = 282322024908800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11881091 and 11881100.

It is not an unprimeable number, because it can be changed into a prime (11881123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36969 + ... + 37288.

Almost surely, 2^11881120 is an apocalyptic number.

11881120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11881120 is an abundant number, since it is smaller than the sum of its proper divisors (16188404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11881120 is an equidigital number, since it uses as much as digits as its factorization.

11881120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74272 (or 74264 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

The square root of 11881120 is about 3446.9000565726. The cubic root of 11881120 is about 228.1843179705.

Adding to 11881120 its reverse (2118811), we get a palindrome (13999931).

The spelling of 11881120 in words is "eleven million, eight hundred eighty-one thousand, one hundred twenty".