121342522409 has 2 divisors, whose sum is σ = 121342522410. Its totient is φ = 121342522408.

The previous prime is 121342522369. The next prime is 121342522451. The reversal of 121342522409 is 904225243121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106445587600 + 14896934809 = 326260^2 + 122053^2 .

It is a cyclic number.

It is not a de Polignac number, because 121342522409 - 2⁸ = 121342522153 is a prime.

It is not a weakly prime, because it can be changed into another prime (121342522909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60671261204 + 60671261205.

It is an arithmetic number, because the mean of its divisors is an integer number (60671261205).

Almost surely, 2^121342522409 is an apocalyptic number.

It is an amenable number.

121342522409 is a deficient number, since it is larger than the sum of its proper divisors (1).

121342522409 is an equidigital number, since it uses as much as digits as its factorization.

121342522409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 121342522409 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred twenty-two thousand, four hundred nine".