113121321033 has 32 divisors (see below), whose sum is σ = 173313043200. Its totient is φ = 64289949696.

The previous prime is 113121321011. The next prime is 113121321083. The reversal of 113121321033 is 330123121311.

It is a happy number.

It is not a de Polignac number, because 113121321033 - 2²² = 113117126729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (113121321083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3332973 + ... + 3366741.

It is an arithmetic number, because the mean of its divisors is an integer number (5416032600).

Almost surely, 2^113121321033 is an apocalyptic number.

It is an amenable number.

113121321033 is a deficient number, since it is larger than the sum of its proper divisors (60191722167).

113121321033 is a wasteful number, since it uses less digits than its factorization.

113121321033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34641.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 113121321033 its reverse (330123121311), we get a palindrome (443244442344).

The spelling of 113121321033 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred twenty-one thousand, thirty-three".