121466591 has 2 divisors, whose sum is σ = 121466592. Its totient is φ = 121466590.

The previous prime is 121466557. The next prime is 121466593. The reversal of 121466591 is 195664121.

It is a strong prime.

It is an emirp because it is prime and its reverse (195664121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121466591 is a prime.

It is a super-2 number, since 2×121466591² = 29508265458322562, which contains 22 as substring.

Together with 121466593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121466593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60733295 + 60733296.

It is an arithmetic number, because the mean of its divisors is an integer number (60733296).

Almost surely, 2^121466591 is an apocalyptic number.

121466591 is a deficient number, since it is larger than the sum of its proper divisors (1).

121466591 is an equidigital number, since it uses as much as digits as its factorization.

121466591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 121466591 is about 11021.1882753177. The cubic root of 121466591 is about 495.2436864288.

The spelling of 121466591 in words is "one hundred twenty-one million, four hundred sixty-six thousand, five hundred ninety-one".