121079887 has 2 divisors, whose sum is σ = 121079888. Its totient is φ = 121079886.

The previous prime is 121079821. The next prime is 121079897. The reversal of 121079887 is 788970121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121079887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121079897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60539943 + 60539944.

It is an arithmetic number, because the mean of its divisors is an integer number (60539944).

Almost surely, 2^121079887 is an apocalyptic number.

121079887 is a deficient number, since it is larger than the sum of its proper divisors (1).

121079887 is an equidigital number, since it uses as much as digits as its factorization.

121079887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 121079887 is about 11003.6306281154. The cubic root of 121079887 is about 494.7175710912.

The spelling of 121079887 in words is "one hundred twenty-one million, seventy-nine thousand, eight hundred eighty-seven".