121215354023143 has 2 divisors, whose sum is σ = 121215354023144. Its totient is φ = 121215354023142.

The previous prime is 121215354023021. The next prime is 121215354023173. The reversal of 121215354023143 is 341320453512121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121215354023143 - 2²¹ = 121215351925991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121215354023173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607677011571 + 60607677011572.

It is an arithmetic number, because the mean of its divisors is an integer number (60607677011572).

Almost surely, 2^{121215354023143} is an apocalyptic number.

121215354023143 is a deficient number, since it is larger than the sum of its proper divisors (1).

121215354023143 is an equidigital number, since it uses as much as digits as its factorization.

121215354023143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 121215354023143 in words is "one hundred twenty-one trillion, two hundred fifteen billion, three hundred fifty-four million, twenty-three thousand, one hundred forty-three".