1112120220131 has 4 divisors (see below), whose sum is σ = 1112551444200. Its totient is φ = 1111688996064.

The previous prime is 1112120220073. The next prime is 1112120220181. The reversal of 1112120220131 is 1310220212111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112120220131 is a prime.

It is a super-2 number, since 2×1112120220131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112120220181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215608166 + ... + 215613323.

It is an arithmetic number, because the mean of its divisors is an integer number (278137861050).

Almost surely, 2^{1112120220131} is an apocalyptic number.

1112120220131 is a deficient number, since it is larger than the sum of its proper divisors (431224069).

1112120220131 is an equidigital number, since it uses as much as digits as its factorization.

1112120220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431224068.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1112120220131 its reverse (1310220212111), we get a palindrome (2422340432242).

The spelling of 1112120220131 in words is "one trillion, one hundred twelve billion, one hundred twenty million, two hundred twenty thousand, one hundred thirty-one".