122290387 has 2 divisors, whose sum is σ = 122290388. Its totient is φ = 122290386.

The previous prime is 122290339. The next prime is 122290489. The reversal of 122290387 is 783092221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122290387 is a prime.

It is not a weakly prime, because it can be changed into another prime (122290307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61145193 + 61145194.

It is an arithmetic number, because the mean of its divisors is an integer number (61145194).

Almost surely, 2^122290387 is an apocalyptic number.

122290387 is a deficient number, since it is larger than the sum of its proper divisors (1).

122290387 is an equidigital number, since it uses as much as digits as its factorization.

122290387 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 34.

The square root of 122290387 is about 11058.4984062033. The cubic root of 122290387 is about 496.3607587778.

The spelling of 122290387 in words is "one hundred twenty-two million, two hundred ninety thousand, three hundred eighty-seven".