113003112121 has 4 divisors (see below), whose sum is σ = 114272810100. Its totient is φ = 111733414144.

The previous prime is 113003112119. The next prime is 113003112149. The reversal of 113003112121 is 121211300311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31661220096 + 81341892025 = 177936^2 + 285205^2 .

It is a cyclic number.

It is not a de Polignac number, because 113003112121 - 2¹ = 113003112119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113003112095 and 113003112104.

It is not an unprimeable number, because it can be changed into a prime (113003113121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634848856 + ... + 634849033.

It is an arithmetic number, because the mean of its divisors is an integer number (28568202525).

Almost surely, 2^113003112121 is an apocalyptic number.

It is an amenable number.

113003112121 is a deficient number, since it is larger than the sum of its proper divisors (1269697979).

113003112121 is an equidigital number, since it uses as much as digits as its factorization.

113003112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269697978.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 113003112121 its reverse (121211300311), we get a palindrome (234214412432).

The spelling of 113003112121 in words is "one hundred thirteen billion, three million, one hundred twelve thousand, one hundred twenty-one".