113121210011 has 4 divisors (see below), whose sum is σ = 113124288024. Its totient is φ = 113118132000.

The previous prime is 113121209917. The next prime is 113121210019. The reversal of 113121210011 is 110012121311.

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

It is a cyclic number.

It is not a de Polignac number, because 113121210011 - 2¹⁸ = 113120947867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113121210019) 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, 1483205 + ... + 1557606.

It is an arithmetic number, because the mean of its divisors is an integer number (28281072006).

Almost surely, 2^113121210011 is an apocalyptic number.

113121210011 is a deficient number, since it is larger than the sum of its proper divisors (3078013).

113121210011 is an equidigital number, since it uses as much as digits as its factorization.

113121210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078012.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 113121210011 its reverse (110012121311), we get a palindrome (223133331322).

The spelling of 113121210011 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred ten thousand, eleven".