121194287 has 2 divisors, whose sum is σ = 121194288. Its totient is φ = 121194286.

The previous prime is 121194259. The next prime is 121194301. The reversal of 121194287 is 782491121.

It is a strong prime.

It is an emirp because it is prime and its reverse (782491121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121194287 - 2¹⁰ = 121193263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121194187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60597143 + 60597144.

It is an arithmetic number, because the mean of its divisors is an integer number (60597144).

Almost surely, 2^121194287 is an apocalyptic number.

121194287 is a deficient number, since it is larger than the sum of its proper divisors (1).

121194287 is an equidigital number, since it uses as much as digits as its factorization.

121194287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 121194287 is about 11008.8276850898. The cubic root of 121194287 is about 494.8733301702.

The spelling of 121194287 in words is "one hundred twenty-one million, one hundred ninety-four thousand, two hundred eighty-seven".