2122721142617 has 2 divisors, whose sum is σ = 2122721142618. Its totient is φ = 2122721142616.

The previous prime is 2122721142611. The next prime is 2122721142623. The reversal of 2122721142617 is 7162411272212.

It is a balanced prime because it is at equal distance from previous prime (2122721142611) and next prime (2122721142623).

It can be written as a sum of positive squares in only one way, i.e., 1469487026176 + 653234116441 = 1212224^2 + 808229^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122721142617 - 2¹⁴ = 2122721126233 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122721142611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061360571308 + 1061360571309.

It is an arithmetic number, because the mean of its divisors is an integer number (1061360571309).

Almost surely, 2^{2122721142617} is an apocalyptic number.

It is an amenable number.

2122721142617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122721142617 is an equidigital number, since it uses as much as digits as its factorization.

2122721142617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The spelling of 2122721142617 in words is "two trillion, one hundred twenty-two billion, seven hundred twenty-one million, one hundred forty-two thousand, six hundred seventeen".