123121121341 has 2 divisors, whose sum is σ = 123121121342. Its totient is φ = 123121121340.

The previous prime is 123121121329. The next prime is 123121121447. The reversal of 123121121341 is 143121121321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110273805625 + 12847315716 = 332075^2 + 113346^2 .

It is a cyclic number.

It is not a de Polignac number, because 123121121341 - 2⁵ = 123121121309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123121121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560560670 + 61560560671.

It is an arithmetic number, because the mean of its divisors is an integer number (61560560671).

Almost surely, 2^123121121341 is an apocalyptic number.

It is an amenable number.

123121121341 is a deficient number, since it is larger than the sum of its proper divisors (1).

123121121341 is an equidigital number, since it uses as much as digits as its factorization.

123121121341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

Adding to 123121121341 its reverse (143121121321), we get a palindrome (266242242662).

The spelling of 123121121341 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred forty-one".