2221353791 has 2 divisors, whose sum is σ = 2221353792. Its totient is φ = 2221353790.

The previous prime is 2221353767. The next prime is 2221353829. The reversal of 2221353791 is 1973531222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221353791 - 2²² = 2217159487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221353721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110676895 + 1110676896.

It is an arithmetic number, because the mean of its divisors is an integer number (1110676896).

Almost surely, 2^2221353791 is an apocalyptic number.

2221353791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221353791 is an equidigital number, since it uses as much as digits as its factorization.

2221353791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 2221353791 is about 47131.2400749227. The cubic root of 2221353791 is about 1304.7858685766.

The spelling of 2221353791 in words is "two billion, two hundred twenty-one million, three hundred fifty-three thousand, seven hundred ninety-one".