122287120084721 has 2 divisors, whose sum is σ = 122287120084722. Its totient is φ = 122287120084720.

The previous prime is 122287120084687. The next prime is 122287120084769. The reversal of 122287120084721 is 127480021782221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122162973085696 + 124146999025 = 11052736^2 + 352345^2 .

It is an emirp because it is prime and its reverse (127480021782221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122287120084721 - 2¹⁰ = 122287120083697 is a prime.

It is a super-2 number, since 2×122287120084721² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122287120084421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61143560042360 + 61143560042361.

It is an arithmetic number, because the mean of its divisors is an integer number (61143560042361).

Almost surely, 2^{122287120084721} is an apocalyptic number.

It is an amenable number.

122287120084721 is a deficient number, since it is larger than the sum of its proper divisors (1).

122287120084721 is an equidigital number, since it uses as much as digits as its factorization.

122287120084721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 401408, while the sum is 47.

The spelling of 122287120084721 in words is "one hundred twenty-two trillion, two hundred eighty-seven billion, one hundred twenty million, eighty-four thousand, seven hundred twenty-one".