11220032331 has 16 divisors (see below), whose sum is σ = 16809040800. Its totient is φ = 7395974784.

The previous prime is 11220032321. The next prime is 11220032333. The reversal of 11220032331 is 13323002211.

11220032331 is a `hidden beast` number, since 112 + 200 + 323 + 31 = 666.

It is not a de Polignac number, because 11220032331 - 2⁶ = 11220032267 is a prime.

It is a super-2 number, since 2×11220032331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220032333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2332186 + ... + 2336991.

It is an arithmetic number, because the mean of its divisors is an integer number (1050565050).

Almost surely, 2^11220032331 is an apocalyptic number.

11220032331 is a deficient number, since it is larger than the sum of its proper divisors (5589008469).

11220032331 is an equidigital number, since it uses as much as digits as its factorization.

11220032331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669275 (or 4669269 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11220032331 its reverse (13323002211), we get a palindrome (24543034542).

The spelling of 11220032331 in words is "eleven billion, two hundred twenty million, thirty-two thousand, three hundred thirty-one".