122085115421 has 2 divisors, whose sum is σ = 122085115422. Its totient is φ = 122085115420.

The previous prime is 122085115417. The next prime is 122085115423. The reversal of 122085115421 is 124511580221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117710748100 + 4374367321 = 343090^2 + 66139^2 .

It is a cyclic number.

It is not a de Polignac number, because 122085115421 - 2² = 122085115417 is a prime.

Together with 122085115423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122085115423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61042557710 + 61042557711.

It is an arithmetic number, because the mean of its divisors is an integer number (61042557711).

Almost surely, 2^122085115421 is an apocalyptic number.

It is an amenable number.

122085115421 is a deficient number, since it is larger than the sum of its proper divisors (1).

122085115421 is an equidigital number, since it uses as much as digits as its factorization.

122085115421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 32.

Adding to 122085115421 its reverse (124511580221), we get a palindrome (246596695642).

The spelling of 122085115421 in words is "one hundred twenty-two billion, eighty-five million, one hundred fifteen thousand, four hundred twenty-one".