113121130002121 has 4 divisors (see below), whose sum is σ = 114670734522772. Its totient is φ = 111571525481472.

The previous prime is 113121130002119. The next prime is 113121130002143. The reversal of 113121130002121 is 121200031121311.

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 60321069688896 + 52800060313225 = 7766664^2 + 7266365^2 .

It is a cyclic number.

It is not a de Polignac number, because 113121130002121 - 2¹ = 113121130002119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113121130003121) 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, 774802260216 + ... + 774802260361.

It is an arithmetic number, because the mean of its divisors is an integer number (28667683630693).

Almost surely, 2^{113121130002121} is an apocalyptic number.

It is an amenable number.

113121130002121 is a deficient number, since it is larger than the sum of its proper divisors (1549604520651).

113121130002121 is an equidigital number, since it uses as much as digits as its factorization.

113121130002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549604520650.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 113121130002121 its reverse (121200031121311), we get a palindrome (234321161123432).

The spelling of 113121130002121 in words is "one hundred thirteen trillion, one hundred twenty-one billion, one hundred thirty million, two thousand, one hundred twenty-one".