11312130220 has 24 divisors (see below), whose sum is σ = 23827256208. Its totient is φ = 4511179200.

The previous prime is 11312130197. The next prime is 11312130329. The reversal of 11312130220 is 2203121311.

It is a super-2 number, since 2×11312130220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11312130194 and 11312130203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847771 + ... + 861010.

It is an arithmetic number, because the mean of its divisors is an integer number (992802342).

Almost surely, 2^11312130220 is an apocalyptic number.

11312130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11312130220 is an abundant number, since it is smaller than the sum of its proper divisors (12515125988).

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

11312130220 is a wasteful number, since it uses less digits than its factorization.

11312130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709121 (or 1709119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11312130220 its reverse (2203121311), we get a palindrome (13515251531).

It can be divided in two parts, 113121 and 30220, that added together give a palindrome (143341).

The spelling of 11312130220 in words is "eleven billion, three hundred twelve million, one hundred thirty thousand, two hundred twenty".