121952148391 has 2 divisors, whose sum is σ = 121952148392. Its totient is φ = 121952148390.

The previous prime is 121952148377. The next prime is 121952148421. The reversal of 121952148391 is 193841259121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121952148391 - 2²⁹ = 121415277479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121952145391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60976074195 + 60976074196.

It is an arithmetic number, because the mean of its divisors is an integer number (60976074196).

Almost surely, 2^121952148391 is an apocalyptic number.

121952148391 is a deficient number, since it is larger than the sum of its proper divisors (1).

121952148391 is an equidigital number, since it uses as much as digits as its factorization.

121952148391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 46.

The spelling of 121952148391 in words is "one hundred twenty-one billion, nine hundred fifty-two million, one hundred forty-eight thousand, three hundred ninety-one".