1230122987 has 2 divisors, whose sum is σ = 1230122988. Its totient is φ = 1230122986.

The previous prime is 1230122977. The next prime is 1230122989. The reversal of 1230122987 is 7892210321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230122987 - 2²⁶ = 1163014123 is a prime.

Together with 1230122989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1230122989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061493 + 615061494.

It is an arithmetic number, because the mean of its divisors is an integer number (615061494).

Almost surely, 2^1230122987 is an apocalyptic number.

1230122987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230122987 is an equidigital number, since it uses as much as digits as its factorization.

1230122987 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1230122987 is about 35073.1091721279. The cubic root of 1230122987 is about 1071.4769794349.

The spelling of 1230122987 in words is "one billion, two hundred thirty million, one hundred twenty-two thousand, nine hundred eighty-seven".