2214220691 has 2 divisors, whose sum is σ = 2214220692. Its totient is φ = 2214220690.

The previous prime is 2214220643. The next prime is 2214220699. The reversal of 2214220691 is 1960224122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2214220691 is a prime.

It is not a weakly prime, because it can be changed into another prime (2214220699) 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, 1107110345 + 1107110346.

It is an arithmetic number, because the mean of its divisors is an integer number (1107110346).

Almost surely, 2^2214220691 is an apocalyptic number.

2214220691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2214220691 is an equidigital number, since it uses as much as digits as its factorization.

2214220691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2214220691 is about 47055.5064896766. The cubic root of 2214220691 is about 1303.3877499812.

The spelling of 2214220691 in words is "two billion, two hundred fourteen million, two hundred twenty thousand, six hundred ninety-one".