1131220201320 has 96 divisors (see below), whose sum is σ = 4010689818720. Its totient is φ = 274235199360.

The previous prime is 1131220201283. The next prime is 1131220201351. The reversal of 1131220201320 is 231020221311.

1131220201320 is a `hidden beast` number, since 11 + 312 + 2 + 0 + 20 + 1 + 320 = 666.

It is a super-2 number, since 2×1131220201320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1131220201293 and 1131220201302.

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, 142826874 + ... + 142834793.

It is an arithmetic number, because the mean of its divisors is an integer number (41778018945).

Almost surely, 2^{1131220201320} is an apocalyptic number.

1131220201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131220201320 is an abundant number, since it is smaller than the sum of its proper divisors (2879469617400).

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

1131220201320 is a wasteful number, since it uses less digits than its factorization.

1131220201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285661695 (or 285661688 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1131220201320 its reverse (231020221311), we get a palindrome (1362240422631).

The spelling of 1131220201320 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, two hundred one thousand, three hundred twenty".