122021012077 has 2 divisors, whose sum is σ = 122021012078. Its totient is φ = 122021012076.

The previous prime is 122021012041. The next prime is 122021012093. The reversal of 122021012077 is 770210120221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119236233636 + 2784778441 = 345306^2 + 52771^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021012077 - 2³¹ = 119873528429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122021052077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010506038 + 61010506039.

It is an arithmetic number, because the mean of its divisors is an integer number (61010506039).

Almost surely, 2^122021012077 is an apocalyptic number.

It is an amenable number.

122021012077 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021012077 is an equidigital number, since it uses as much as digits as its factorization.

122021012077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 122021012077 its reverse (770210120221), we get a palindrome (892231132298).

The spelling of 122021012077 in words is "one hundred twenty-two billion, twenty-one million, twelve thousand, seventy-seven".