2221614251 has 2 divisors, whose sum is σ = 2221614252. Its totient is φ = 2221614250.

The previous prime is 2221614209. The next prime is 2221614257. The reversal of 2221614251 is 1524161222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221614251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221614251.

It is not a weakly prime, because it can be changed into another prime (2221614257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110807125 + 1110807126.

It is an arithmetic number, because the mean of its divisors is an integer number (1110807126).

Almost surely, 2^2221614251 is an apocalyptic number.

2221614251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221614251 is an equidigital number, since it uses as much as digits as its factorization.

2221614251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

The square root of 2221614251 is about 47134.0031293757. The cubic root of 2221614251 is about 1304.8368631919.

Adding to 2221614251 its reverse (1524161222), we get a palindrome (3745775473).

The spelling of 2221614251 in words is "two billion, two hundred twenty-one million, six hundred fourteen thousand, two hundred fifty-one".