2122011217 has 2 divisors, whose sum is σ = 2122011218. Its totient is φ = 2122011216.

The previous prime is 2122011167. The next prime is 2122011233. The reversal of 2122011217 is 7121102212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1682312256 + 439698961 = 41016^2 + 20969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122011217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122011194 and 2122011203.

It is not a weakly prime, because it can be changed into another prime (2122011517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061005608 + 1061005609.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005609).

Almost surely, 2^2122011217 is an apocalyptic number.

It is an amenable number.

2122011217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122011217 is an equidigital number, since it uses as much as digits as its factorization.

2122011217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2122011217 is about 46065.2929763830. The cubic root of 2122011217 is about 1285.0377672135.

Adding to 2122011217 its reverse (7121102212), we get a palindrome (9243113429).

The spelling of 2122011217 in words is "two billion, one hundred twenty-two million, eleven thousand, two hundred seventeen".