122243687 has 2 divisors, whose sum is σ = 122243688. Its totient is φ = 122243686.

The previous prime is 122243621. The next prime is 122243699. The reversal of 122243687 is 786342221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122243687 - 2¹² = 122239591 is a prime.

It is a super-2 number, since 2×122243687² = 29887038022707938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122243887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61121843 + 61121844.

It is an arithmetic number, because the mean of its divisors is an integer number (61121844).

Almost surely, 2^122243687 is an apocalyptic number.

122243687 is a deficient number, since it is larger than the sum of its proper divisors (1).

122243687 is an equidigital number, since it uses as much as digits as its factorization.

122243687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 122243687 is about 11056.3867063340. The cubic root of 122243687 is about 496.2975676602.

The spelling of 122243687 in words is "one hundred twenty-two million, two hundred forty-three thousand, six hundred eighty-seven".