113030221121 has 4 divisors (see below), whose sum is σ = 113247170244. Its totient is φ = 112813272000.

The previous prime is 113030221091. The next prime is 113030221123. The reversal of 113030221121 is 121122030311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121122030311 = 25031 ⋅4838881.

It can be written as a sum of positive squares in 2 ways, for example, as 10668617521 + 102361603600 = 103289^2 + 319940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113030221121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113030221121.

It is not an unprimeable number, because it can be changed into a prime (113030221123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 108473780 + ... + 108474821.

It is an arithmetic number, because the mean of its divisors is an integer number (28311792561).

Almost surely, 2^113030221121 is an apocalyptic number.

It is an amenable number.

113030221121 is a deficient number, since it is larger than the sum of its proper divisors (216949123).

113030221121 is an equidigital number, since it uses as much as digits as its factorization.

113030221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216949122.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 113030221121 its reverse (121122030311), we get a palindrome (234152251432).

The spelling of 113030221121 in words is "one hundred thirteen billion, thirty million, two hundred twenty-one thousand, one hundred twenty-one".