122638247287 has 2 divisors, whose sum is σ = 122638247288. Its totient is φ = 122638247286.

The previous prime is 122638247257. The next prime is 122638247293. The reversal of 122638247287 is 782742836221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122638247287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122638247257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61319123643 + 61319123644.

It is an arithmetic number, because the mean of its divisors is an integer number (61319123644).

Almost surely, 2^122638247287 is an apocalyptic number.

122638247287 is a deficient number, since it is larger than the sum of its proper divisors (1).

122638247287 is an equidigital number, since it uses as much as digits as its factorization.

122638247287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 52.

The spelling of 122638247287 in words is "one hundred twenty-two billion, six hundred thirty-eight million, two hundred forty-seven thousand, two hundred eighty-seven".