122776387 has 2 divisors, whose sum is σ = 122776388. Its totient is φ = 122776386.

The previous prime is 122776351. The next prime is 122776393. The reversal of 122776387 is 783677221.

It is a strong prime.

It is an emirp because it is prime and its reverse (783677221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122776387 - 2⁷ = 122776259 is a prime.

It is not a weakly prime, because it can be changed into another prime (122776987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61388193 + 61388194.

It is an arithmetic number, because the mean of its divisors is an integer number (61388194).

Almost surely, 2^122776387 is an apocalyptic number.

122776387 is a deficient number, since it is larger than the sum of its proper divisors (1).

122776387 is an equidigital number, since it uses as much as digits as its factorization.

122776387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 43.

The square root of 122776387 is about 11080.4506677301. The cubic root of 122776387 is about 497.0174265542.

The spelling of 122776387 in words is "one hundred twenty-two million, seven hundred seventy-six thousand, three hundred eighty-seven".