122555240244461 has 2 divisors, whose sum is σ = 122555240244462. Its totient is φ = 122555240244460.

The previous prime is 122555240244391. The next prime is 122555240244469. The reversal of 122555240244461 is 164442042555221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105807453375625 + 16747786868836 = 10286275^2 + 4092406^2 .

It is an emirp because it is prime and its reverse (164442042555221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122555240244461 - 2¹⁰ = 122555240243437 is a prime.

It is a super-2 number, since 2×122555240244461² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122555240244469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61277620122230 + 61277620122231.

It is an arithmetic number, because the mean of its divisors is an integer number (61277620122231).

Almost surely, 2^{122555240244461} is an apocalyptic number.

It is an amenable number.

122555240244461 is a deficient number, since it is larger than the sum of its proper divisors (1).

122555240244461 is an equidigital number, since it uses as much as digits as its factorization.

122555240244461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072000, while the sum is 47.

Adding to 122555240244461 its reverse (164442042555221), we get a palindrome (286997282799682).

The spelling of 122555240244461 in words is "one hundred twenty-two trillion, five hundred fifty-five billion, two hundred forty million, two hundred forty-four thousand, four hundred sixty-one".