122405501 has 2 divisors, whose sum is σ = 122405502. Its totient is φ = 122405500.

The previous prime is 122405447. The next prime is 122405519. The reversal of 122405501 is 105504221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122124601 + 280900 = 11051^2 + 530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122405501 is a prime.

It is a super-2 number, since 2×122405501² = 29966213350122002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122405401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61202750 + 61202751.

It is an arithmetic number, because the mean of its divisors is an integer number (61202751).

Almost surely, 2^122405501 is an apocalyptic number.

It is an amenable number.

122405501 is a deficient number, since it is larger than the sum of its proper divisors (1).

122405501 is an equidigital number, since it uses as much as digits as its factorization.

122405501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 122405501 is about 11063.7019573016. The cubic root of 122405501 is about 496.5164541813.

Adding to 122405501 its reverse (105504221), we get a palindrome (227909722).

The spelling of 122405501 in words is "one hundred twenty-two million, four hundred five thousand, five hundred one".