121200242302351 has 2 divisors, whose sum is σ = 121200242302352. Its totient is φ = 121200242302350.

The previous prime is 121200242302309. The next prime is 121200242302357. The reversal of 121200242302351 is 153203242002121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (153203242002121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121200242302351 - 2¹¹ = 121200242300303 is a prime.

It is a super-4 number, since 4×121200242302351⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121200242302357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600121151175 + 60600121151176.

It is an arithmetic number, because the mean of its divisors is an integer number (60600121151176).

Almost surely, 2^{121200242302351} is an apocalyptic number.

121200242302351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200242302351 is an equidigital number, since it uses as much as digits as its factorization.

121200242302351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 121200242302351 its reverse (153203242002121), we get a palindrome (274403484304472).

The spelling of 121200242302351 in words is "one hundred twenty-one trillion, two hundred billion, two hundred forty-two million, three hundred two thousand, three hundred fifty-one".