122126647 has 2 divisors, whose sum is σ = 122126648. Its totient is φ = 122126646.

The previous prime is 122126621. The next prime is 122126663. The reversal of 122126647 is 746621221.

It is a strong prime.

It is an emirp because it is prime and its reverse (746621221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122126647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122126687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61063323 + 61063324.

It is an arithmetic number, because the mean of its divisors is an integer number (61063324).

Almost surely, 2^122126647 is an apocalyptic number.

122126647 is a deficient number, since it is larger than the sum of its proper divisors (1).

122126647 is an equidigital number, since it uses as much as digits as its factorization.

122126647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 122126647 is about 11051.0925704204. The cubic root of 122126647 is about 496.1391267170.

Adding to 122126647 its reverse (746621221), we get a palindrome (868747868).

The spelling of 122126647 in words is "one hundred twenty-two million, one hundred twenty-six thousand, six hundred forty-seven".