122221221077 has 2 divisors, whose sum is σ = 122221221078. Its totient is φ = 122221221076.

The previous prime is 122221221061. The next prime is 122221221137. The reversal of 122221221077 is 770122122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101321892721 + 20899328356 = 318311^2 + 144566^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221221077 - 2⁴ = 122221221061 is a prime.

It is a super-3 number, since 3×122221221077³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221221007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110610538 + 61110610539.

It is an arithmetic number, because the mean of its divisors is an integer number (61110610539).

Almost surely, 2^122221221077 is an apocalyptic number.

It is an amenable number.

122221221077 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221221077 is an equidigital number, since it uses as much as digits as its factorization.

122221221077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 122221221077 its reverse (770122122221), we get a palindrome (892343343298).

The spelling of 122221221077 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, seventy-seven".