121232987 has 2 divisors, whose sum is σ = 121232988. Its totient is φ = 121232986.

The previous prime is 121232981. The next prime is 121233019. The reversal of 121232987 is 789232121.

It is a weak prime.

It is an emirp because it is prime and its reverse (789232121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121232987 - 2¹⁶ = 121167451 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 (121232981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616493 + 60616494.

It is an arithmetic number, because the mean of its divisors is an integer number (60616494).

Almost surely, 2^121232987 is an apocalyptic number.

121232987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232987 is an equidigital number, since it uses as much as digits as its factorization.

121232987 is an evil number, because the sum of its binary digits is even.

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

The square root of 121232987 is about 11010.5852251368. The cubic root of 121232987 is about 494.9259992087.

The spelling of 121232987 in words is "one hundred twenty-one million, two hundred thirty-two thousand, nine hundred eighty-seven".