113011221131 has 4 divisors (see below), whose sum is σ = 113134194000. Its totient is φ = 112888248264.

The previous prime is 113011221121. The next prime is 113011221151. The reversal of 113011221131 is 131122110311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131122110311 = 10343 ⋅12677377.

It is a cyclic number.

It is not a de Polignac number, because 113011221131 - 2⁶ = 113011221067 is a prime.

It is a super-2 number, since 2×113011221131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113011221121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61485056 + ... + 61486893.

It is an arithmetic number, because the mean of its divisors is an integer number (28283548500).

Almost surely, 2^113011221131 is an apocalyptic number.

113011221131 is a deficient number, since it is larger than the sum of its proper divisors (122972869).

113011221131 is an equidigital number, since it uses as much as digits as its factorization.

113011221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122972868.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 113011221131 its reverse (131122110311), we get a palindrome (244133331442).

The spelling of 113011221131 in words is "one hundred thirteen billion, eleven million, two hundred twenty-one thousand, one hundred thirty-one".