11031032220 has 72 divisors (see below), whose sum is σ = 33445598256. Its totient is φ = 2715328512.

The previous prime is 11031032203. The next prime is 11031032237. The reversal of 11031032220 is 2223013011.

It is an interprime number because it is at equal distance from previous prime (11031032203) and next prime (11031032237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11031032220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533797 + ... + 554076.

It is an arithmetic number, because the mean of its divisors is an integer number (464522198).

Almost surely, 2^11031032220 is an apocalyptic number.

11031032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031032220 is an abundant number, since it is smaller than the sum of its proper divisors (22414566036).

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

11031032220 is a wasteful number, since it uses less digits than its factorization.

11031032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087911 (or 1087896 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 11031032220 its reverse (2223013011), we get a palindrome (13254045231).

The spelling of 11031032220 in words is "eleven billion, thirty-one million, thirty-two thousand, two hundred twenty".