2122209989 has 2 divisors, whose sum is σ = 2122209990. Its totient is φ = 2122209988.

The previous prime is 2122209967. The next prime is 2122210007. The reversal of 2122209989 is 9899022212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1078596964 + 1043613025 = 32842^2 + 32305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122209989 is a prime.

It is a super-2 number, since 2×2122209989² = 9007550474822760242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122209919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061104994 + 1061104995.

It is an arithmetic number, because the mean of its divisors is an integer number (1061104995).

Almost surely, 2^2122209989 is an apocalyptic number.

It is an amenable number.

2122209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122209989 is an equidigital number, since it uses as much as digits as its factorization.

2122209989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 2122209989 is about 46067.4504286921. The cubic root of 2122209989 is about 1285.0778897711.

The spelling of 2122209989 in words is "two billion, one hundred twenty-two million, two hundred nine thousand, nine hundred eighty-nine".