121412587 has 2 divisors, whose sum is σ = 121412588. Its totient is φ = 121412586.

The previous prime is 121412581. The next prime is 121412591. The reversal of 121412587 is 785214121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121412587 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (121412581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60706293 + 60706294.

It is an arithmetic number, because the mean of its divisors is an integer number (60706294).

Almost surely, 2^121412587 is an apocalyptic number.

121412587 is a deficient number, since it is larger than the sum of its proper divisors (1).

121412587 is an equidigital number, since it uses as much as digits as its factorization.

121412587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 31.

The square root of 121412587 is about 11018.7379948885. The cubic root of 121412587 is about 495.1702804977.

The spelling of 121412587 in words is "one hundred twenty-one million, four hundred twelve thousand, five hundred eighty-seven".