245134332442121 has 2 divisors, whose sum is σ = 245134332442122. Its totient is φ = 245134332442120.

The previous prime is 245134332442093. The next prime is 245134332442123. The reversal of 245134332442121 is 121244233431542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225763726990096 + 19370605452025 = 15025436^2 + 4401205^2 .

It is a cyclic number.

It is not a de Polignac number, because 245134332442121 - 2²⁶ = 245134265333257 is a prime.

Together with 245134332442123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245134332442123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122567166221060 + 122567166221061.

It is an arithmetic number, because the mean of its divisors is an integer number (122567166221061).

Almost surely, 2^{245134332442121} is an apocalyptic number.

It is an amenable number.

245134332442121 is a deficient number, since it is larger than the sum of its proper divisors (1).

245134332442121 is an equidigital number, since it uses as much as digits as its factorization.

245134332442121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 552960, while the sum is 41.

Adding to 245134332442121 its reverse (121244233431542), we get a palindrome (366378565873663).

The spelling of 245134332442121 in words is "two hundred forty-five trillion, one hundred thirty-four billion, three hundred thirty-two million, four hundred forty-two thousand, one hundred twenty-one".