11123131013220 has 24 divisors (see below), whose sum is σ = 31144766837184. Its totient is φ = 2966168270176.

The previous prime is 11123131013191. The next prime is 11123131013237. The reversal of 11123131013220 is 2231013132111.

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, 92692758384 + ... + 92692758503.

It is an arithmetic number, because the mean of its divisors is an integer number (1297698618216).

Almost surely, 2^{11123131013220} is an apocalyptic number.

11123131013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123131013220 is an abundant number, since it is smaller than the sum of its proper divisors (20021635823964).

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

11123131013220 is a wasteful number, since it uses less digits than its factorization.

11123131013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185385516899 (or 185385516897 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11123131013220 its reverse (2231013132111), we get a palindrome (13354144145331).

The spelling of 11123131013220 in words is "eleven trillion, one hundred twenty-three billion, one hundred thirty-one million, thirteen thousand, two hundred twenty".