121013687 has 2 divisors, whose sum is σ = 121013688. Its totient is φ = 121013686.

The previous prime is 121013663. The next prime is 121013699. The reversal of 121013687 is 786310121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121013687 - 2¹⁰ = 121012663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121013287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506843 + 60506844.

It is an arithmetic number, because the mean of its divisors is an integer number (60506844).

Almost surely, 2^121013687 is an apocalyptic number.

121013687 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013687 is an equidigital number, since it uses as much as digits as its factorization.

121013687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 121013687 is about 11000.6221187713. The cubic root of 121013687 is about 494.6273929603.

The spelling of 121013687 in words is "one hundred twenty-one million, thirteen thousand, six hundred eighty-seven".