11031121120 has 48 divisors (see below), whose sum is σ = 26068770000. Its totient is φ = 4411137024.

The previous prime is 11031121117. The next prime is 11031121139. The reversal of 11031121120 is 2112113011.

It is a happy number.

It is a super-2 number, since 2×11031121120² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11031121120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670756 + ... + 687004.

It is an arithmetic number, because the mean of its divisors is an integer number (543099375).

Almost surely, 2^11031121120 is an apocalyptic number.

11031121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031121120 is an abundant number, since it is smaller than the sum of its proper divisors (15037648880).

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

11031121120 is a wasteful number, since it uses less digits than its factorization.

11031121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20507 (or 20499 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11031121120 its reverse (2112113011), we get a palindrome (13143234131).

The spelling of 11031121120 in words is "eleven billion, thirty-one million, one hundred twenty-one thousand, one hundred twenty".