2221670651 has 2 divisors, whose sum is σ = 2221670652. Its totient is φ = 2221670650.

The previous prime is 2221670617. The next prime is 2221670663. The reversal of 2221670651 is 1560761222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221670651 - 2¹⁰ = 2221669627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2221670351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110835325 + 1110835326.

It is an arithmetic number, because the mean of its divisors is an integer number (1110835326).

Almost surely, 2^2221670651 is an apocalyptic number.

2221670651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221670651 is an equidigital number, since it uses as much as digits as its factorization.

2221670651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2221670651 is about 47134.6014197638. The cubic root of 2221670651 is about 1304.8479050392.

The spelling of 2221670651 in words is "two billion, two hundred twenty-one million, six hundred seventy thousand, six hundred fifty-one".