121562898487 has 2 divisors, whose sum is σ = 121562898488. Its totient is φ = 121562898486.

The previous prime is 121562898449. The next prime is 121562898511. The reversal of 121562898487 is 784898265121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121562898487 - 2³⁵ = 87203160119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121562890487) 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, 60781449243 + 60781449244.

It is an arithmetic number, because the mean of its divisors is an integer number (60781449244).

Almost surely, 2^121562898487 is an apocalyptic number.

121562898487 is a deficient number, since it is larger than the sum of its proper divisors (1).

121562898487 is an equidigital number, since it uses as much as digits as its factorization.

121562898487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 61.

The spelling of 121562898487 in words is "one hundred twenty-one billion, five hundred sixty-two million, eight hundred ninety-eight thousand, four hundred eighty-seven".