7222110281 has 2 divisors, whose sum is σ = 7222110282. Its totient is φ = 7222110280.

The previous prime is 7222110277. The next prime is 7222110283. The reversal of 7222110281 is 1820112227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6696967225 + 525143056 = 81835^2 + 22916^2 .

It is a cyclic number.

It is not a de Polignac number, because 7222110281 - 2² = 7222110277 is a prime.

It is a super-2 number, since 2×7222110281² (a number of 21 digits) contains 22 as substring.

Together with 7222110283, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7222110281.

It is not a weakly prime, because it can be changed into another prime (7222110283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611055140 + 3611055141.

It is an arithmetic number, because the mean of its divisors is an integer number (3611055141).

Almost surely, 2^7222110281 is an apocalyptic number.

It is an amenable number.

7222110281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7222110281 is an equidigital number, since it uses as much as digits as its factorization.

7222110281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 7222110281 is about 84982.9999529318. Note that the first 4 decimals coincide. The cubic root of 7222110281 is about 1932.9533458083.

The spelling of 7222110281 in words is "seven billion, two hundred twenty-two million, one hundred ten thousand, two hundred eighty-one".