121369387 has 2 divisors, whose sum is σ = 121369388. Its totient is φ = 121369386.

The previous prime is 121369301. The next prime is 121369399. The reversal of 121369387 is 783963121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121369387 - 2¹⁵ = 121336619 is a prime.

It is not a weakly prime, because it can be changed into another prime (121369487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60684693 + 60684694.

It is an arithmetic number, because the mean of its divisors is an integer number (60684694).

Almost surely, 2^121369387 is an apocalyptic number.

121369387 is a deficient number, since it is larger than the sum of its proper divisors (1).

121369387 is an equidigital number, since it uses as much as digits as its factorization.

121369387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 121369387 is about 11016.7775233959. Note that the first 3 decimals coincide. The cubic root of 121369387 is about 495.1115444302. Note that the first 3 decimals are identical.

The spelling of 121369387 in words is "one hundred twenty-one million, three hundred sixty-nine thousand, three hundred eighty-seven".