122120281 has 2 divisors, whose sum is σ = 122120282. Its totient is φ = 122120280.

The previous prime is 122120261. The next prime is 122120303. The reversal of 122120281 is 182021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116640000 + 5480281 = 10800^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120281 - 2⁹ = 122119769 is a prime.

It is a super-2 number, since 2×122120281² = 29826726063037922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122120261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060140 + 61060141.

It is an arithmetic number, because the mean of its divisors is an integer number (61060141).

Almost surely, 2^122120281 is an apocalyptic number.

It is an amenable number.

122120281 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120281 is an equidigital number, since it uses as much as digits as its factorization.

122120281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 122120281 is about 11050.8045408468. The cubic root of 122120281 is about 496.1305059487.

The spelling of 122120281 in words is "one hundred twenty-two million, one hundred twenty thousand, two hundred eighty-one".