2211199997 has 2 divisors, whose sum is σ = 2211199998. Its totient is φ = 2211199996.

The previous prime is 2211199981. The next prime is 2211199999. The reversal of 2211199997 is 7999911122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1557170521 + 654029476 = 39461^2 + 25574^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211199997 - 2⁴ = 2211199981 is a prime.

Together with 2211199999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211199999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105599998 + 1105599999.

It is an arithmetic number, because the mean of its divisors is an integer number (1105599999).

Almost surely, 2^2211199997 is an apocalyptic number.

It is an amenable number.

2211199997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211199997 is an equidigital number, since it uses as much as digits as its factorization.

2211199997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 50.

The square root of 2211199997 is about 47023.3983990949. The cubic root of 2211199997 is about 1302.7947757715.

The spelling of 2211199997 in words is "two billion, two hundred eleven million, one hundred ninety-nine thousand, nine hundred ninety-seven".