113123213011 has 4 divisors (see below), whose sum is σ = 113124134592. Its totient is φ = 113122291432.

The previous prime is 113123212981. The next prime is 113123213017. The reversal of 113123213011 is 110312321311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110312321311 = 9241 ⋅11937271.

It is a cyclic number.

It is not a de Polignac number, because 113123213011 - 2³¹ = 110975729363 is a prime.

It is a super-2 number, since 2×113123213011² (a number of 23 digits) contains 22 as substring.

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 113123213011.

It is not an unprimeable number, because it can be changed into a prime (113123213017) 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, 242056 + ... + 533701.

It is an arithmetic number, because the mean of its divisors is an integer number (28281033648).

Almost surely, 2^113123213011 is an apocalyptic number.

113123213011 is a deficient number, since it is larger than the sum of its proper divisors (921581).

113123213011 is an equidigital number, since it uses as much as digits as its factorization.

113123213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921580.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 113123213011 its reverse (110312321311), we get a palindrome (223435534322).

The spelling of 113123213011 in words is "one hundred thirteen billion, one hundred twenty-three million, two hundred thirteen thousand, eleven".