2221222349 has 2 divisors, whose sum is σ = 2221222350. Its totient is φ = 2221222348.

The previous prime is 2221222343. The next prime is 2221222351. The reversal of 2221222349 is 9432221222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2210692324 + 10530025 = 47018^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221222349 - 2²⁰ = 2220173773 is a prime.

Together with 2221222351, 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 (2221222343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110611174 + 1110611175.

It is an arithmetic number, because the mean of its divisors is an integer number (1110611175).

Almost surely, 2^2221222349 is an apocalyptic number.

It is an amenable number.

2221222349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221222349 is an equidigital number, since it uses as much as digits as its factorization.

2221222349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 2221222349 is about 47129.8456288582. The cubic root of 2221222349 is about 1304.7601324621.

The spelling of 2221222349 in words is "two billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred forty-nine".