121325987 has 2 divisors, whose sum is σ = 121325988. Its totient is φ = 121325986.

The previous prime is 121325983. The next prime is 121325993. The reversal of 121325987 is 789523121.

It is a weak prime.

It is an emirp because it is prime and its reverse (789523121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121325987 - 2² = 121325983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121325987.

It is not a weakly prime, because it can be changed into another prime (121325983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60662993 + 60662994.

It is an arithmetic number, because the mean of its divisors is an integer number (60662994).

Almost surely, 2^121325987 is an apocalyptic number.

121325987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121325987 is an equidigital number, since it uses as much as digits as its factorization.

121325987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 121325987 is about 11014.8076242847. The cubic root of 121325987 is about 495.0525224002.

The spelling of 121325987 in words is "one hundred twenty-one million, three hundred twenty-five thousand, nine hundred eighty-seven".