2274122821 has 2 divisors, whose sum is σ = 2274122822. Its totient is φ = 2274122820.

The previous prime is 2274122819. The next prime is 2274122849. The reversal of 2274122821 is 1282214722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2259576225 + 14546596 = 47535^2 + 3814^2 .

It is a cyclic number.

It is not a de Polignac number, because 2274122821 - 2¹ = 2274122819 is a prime.

Together with 2274122819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2274122801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1137061410 + 1137061411.

It is an arithmetic number, because the mean of its divisors is an integer number (1137061411).

Almost surely, 2^2274122821 is an apocalyptic number.

It is an amenable number.

2274122821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2274122821 is an equidigital number, since it uses as much as digits as its factorization.

2274122821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 31.

The square root of 2274122821 is about 47687.7638498599. The cubic root of 2274122821 is about 1315.0369993493.

The spelling of 2274122821 in words is "two billion, two hundred seventy-four million, one hundred twenty-two thousand, eight hundred twenty-one".