121577023 has 2 divisors, whose sum is σ = 121577024. Its totient is φ = 121577022.

The previous prime is 121577021. The next prime is 121577041. The reversal of 121577023 is 320775121.

It is a weak prime.

It is an emirp because it is prime and its reverse (320775121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121577023 - 2¹ = 121577021 is a prime.

Together with 121577021, it forms a pair of twin primes.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 121576982 and 121577000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121577021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60788511 + 60788512.

It is an arithmetic number, because the mean of its divisors is an integer number (60788512).

Almost surely, 2^121577023 is an apocalyptic number.

121577023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121577023 is an equidigital number, since it uses as much as digits as its factorization.

121577023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 121577023 is about 11026.1971232152. The cubic root of 121577023 is about 495.3937254493.

The spelling of 121577023 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, twenty-three".