121166387 has 2 divisors, whose sum is σ = 121166388. Its totient is φ = 121166386.

The previous prime is 121166371. The next prime is 121166411. The reversal of 121166387 is 783661121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121166387 - 2⁴ = 121166371 is a prime.

It is not a weakly prime, because it can be changed into another prime (121166587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60583193 + 60583194.

It is an arithmetic number, because the mean of its divisors is an integer number (60583194).

Almost surely, 2^121166387 is an apocalyptic number.

121166387 is a deficient number, since it is larger than the sum of its proper divisors (1).

121166387 is an equidigital number, since it uses as much as digits as its factorization.

121166387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 121166387 is about 11007.5604472562. The cubic root of 121166387 is about 494.8353525122.

The spelling of 121166387 in words is "one hundred twenty-one million, one hundred sixty-six thousand, three hundred eighty-seven".