122287387 has 2 divisors, whose sum is σ = 122287388. Its totient is φ = 122287386.

The previous prime is 122287381. The next prime is 122287391. The reversal of 122287387 is 783782221.

It is a strong prime.

It is an emirp because it is prime and its reverse (783782221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122287387 - 2¹⁵ = 122254619 is a prime.

It is not a weakly prime, because it can be changed into another prime (122287381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61143693 + 61143694.

It is an arithmetic number, because the mean of its divisors is an integer number (61143694).

Almost surely, 2^122287387 is an apocalyptic number.

122287387 is a deficient number, since it is larger than the sum of its proper divisors (1).

122287387 is an equidigital number, since it uses as much as digits as its factorization.

122287387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The square root of 122287387 is about 11058.3627630857. The cubic root of 122287387 is about 496.3566998748.

The spelling of 122287387 in words is "one hundred twenty-two million, two hundred eighty-seven thousand, three hundred eighty-seven".