122220011281 has 2 divisors, whose sum is σ = 122220011282. Its totient is φ = 122220011280.

The previous prime is 122220011269. The next prime is 122220011357. The reversal of 122220011281 is 182110022221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66543361600 + 55676649681 = 257960^2 + 235959^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220011281 - 2⁷ = 122220011153 is a prime.

It is a super-2 number, since 2×122220011281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122220011231) 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, 61110005640 + 61110005641.

It is an arithmetic number, because the mean of its divisors is an integer number (61110005641).

Almost surely, 2^122220011281 is an apocalyptic number.

It is an amenable number.

122220011281 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220011281 is an equidigital number, since it uses as much as digits as its factorization.

122220011281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 122220011281 in words is "one hundred twenty-two billion, two hundred twenty million, eleven thousand, two hundred eighty-one".