1113203231220 has 48 divisors (see below), whose sum is σ = 3117041907840. Its totient is φ = 296847255936.

The previous prime is 1113203231207. The next prime is 1113203231227. The reversal of 1113203231220 is 221323023111.

It is a super-3 number, since 3×1113203231220³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113203231227) 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, 2694354 + ... + 3079926.

It is an arithmetic number, because the mean of its divisors is an integer number (64938373080).

Almost surely, 2^{1113203231220} is an apocalyptic number.

1113203231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113203231220 is an abundant number, since it is smaller than the sum of its proper divisors (2003838676620).

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

1113203231220 is a wasteful number, since it uses less digits than its factorization.

1113203231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433704 (or 433702 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1113203231220 its reverse (221323023111), we get a palindrome (1334526254331).

The spelling of 1113203231220 in words is "one trillion, one hundred thirteen billion, two hundred three million, two hundred thirty-one thousand, two hundred twenty".