2216331461 has 2 divisors, whose sum is σ = 2216331462. Its totient is φ = 2216331460.

The previous prime is 2216331427. The next prime is 2216331479. The reversal of 2216331461 is 1641336122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2040238561 + 176092900 = 45169^2 + 13270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216331461 - 2²² = 2212137157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216331961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108165730 + 1108165731.

It is an arithmetic number, because the mean of its divisors is an integer number (1108165731).

Almost surely, 2^2216331461 is an apocalyptic number.

It is an amenable number.

2216331461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216331461 is an equidigital number, since it uses as much as digits as its factorization.

2216331461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 2216331461 is about 47077.9296592363. The cubic root of 2216331461 is about 1303.8017824863.

Adding to 2216331461 its reverse (1641336122), we get a palindrome (3857667583).

The spelling of 2216331461 in words is "two billion, two hundred sixteen million, three hundred thirty-one thousand, four hundred sixty-one".