122120220997 has 2 divisors, whose sum is σ = 122120220998. Its totient is φ = 122120220996.

The previous prime is 122120220979. The next prime is 122120221037. The reversal of 122120220997 is 799022021221.

Together with previous prime (122120220979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112949094241 + 9171126756 = 336079^2 + 95766^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120220997 - 2¹¹ = 122120218949 is a prime.

It is a super-2 number, since 2×122120220997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122120220917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060110498 + 61060110499.

It is an arithmetic number, because the mean of its divisors is an integer number (61060110499).

Almost surely, 2^122120220997 is an apocalyptic number.

It is an amenable number.

122120220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120220997 is an equidigital number, since it uses as much as digits as its factorization.

122120220997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 122120220997 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred twenty thousand, nine hundred ninety-seven".