121323115141 has 4 divisors (see below), whose sum is σ = 122686296300. Its totient is φ = 119959933984.

The previous prime is 121323115057. The next prime is 121323115163. The reversal of 121323115141 is 141511323121.

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 60287436225 + 61035678916 = 245535^2 + 247054^2 .

It is a cyclic number.

It is not a de Polignac number, because 121323115141 - 2²⁵ = 121289560709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323115171) 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, 681590446 + ... + 681590623.

It is an arithmetic number, because the mean of its divisors is an integer number (30671574075).

Almost surely, 2^121323115141 is an apocalyptic number.

It is an amenable number.

121323115141 is a deficient number, since it is larger than the sum of its proper divisors (1363181159).

121323115141 is an equidigital number, since it uses as much as digits as its factorization.

121323115141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363181158.

The product of its digits is 720, while the sum is 25.

Adding to 121323115141 its reverse (141511323121), we get a palindrome (262834438262).

The spelling of 121323115141 in words is "one hundred twenty-one billion, three hundred twenty-three million, one hundred fifteen thousand, one hundred forty-one".