351342424243121 has 2 divisors, whose sum is σ = 351342424243122. Its totient is φ = 351342424243120.

The previous prime is 351342424243117. The next prime is 351342424243123. The reversal of 351342424243121 is 121342424243153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291101231532721 + 60241192710400 = 17061689^2 + 7761520^2 .

It is a cyclic number.

It is not a de Polignac number, because 351342424243121 - 2² = 351342424243117 is a prime.

Together with 351342424243123, 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 (351342424243123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175671212121560 + 175671212121561.

It is an arithmetic number, because the mean of its divisors is an integer number (175671212121561).

Almost surely, 2^{351342424243121} is an apocalyptic number.

It is an amenable number.

351342424243121 is a deficient number, since it is larger than the sum of its proper divisors (1).

351342424243121 is an equidigital number, since it uses as much as digits as its factorization.

351342424243121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 351342424243121 its reverse (121342424243153), we get a palindrome (472684848486274).

The spelling of 351342424243121 in words is "three hundred fifty-one trillion, three hundred forty-two billion, four hundred twenty-four million, two hundred forty-three thousand, one hundred twenty-one".