121210203112351 has 2 divisors, whose sum is σ = 121210203112352. Its totient is φ = 121210203112350.

The previous prime is 121210203112253. The next prime is 121210203112367. The reversal of 121210203112351 is 153211302012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121210203112351 - 2⁷ = 121210203112223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121210203112451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605101556175 + 60605101556176.

It is an arithmetic number, because the mean of its divisors is an integer number (60605101556176).

Almost surely, 2^{121210203112351} is an apocalyptic number.

121210203112351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210203112351 is an equidigital number, since it uses as much as digits as its factorization.

121210203112351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 121210203112351 its reverse (153211302012121), we get a palindrome (274421505124472).

The spelling of 121210203112351 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred three million, one hundred twelve thousand, three hundred fifty-one".