2216344397 has 2 divisors, whose sum is σ = 2216344398. Its totient is φ = 2216344396.

The previous prime is 2216344387. The next prime is 2216344409. The reversal of 2216344397 is 7934436122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1968785641 + 247558756 = 44371^2 + 15734^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216344397 - 2²⁰ = 2215295821 is a prime.

It is a super-2 number, since 2×2216344397² = 9824364972226587218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216344387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108172198 + 1108172199.

It is an arithmetic number, because the mean of its divisors is an integer number (1108172199).

Almost surely, 2^2216344397 is an apocalyptic number.

It is an amenable number.

2216344397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216344397 is an equidigital number, since it uses as much as digits as its factorization.

2216344397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 2216344397 is about 47078.0670482551. The cubic root of 2216344397 is about 1303.8043191025.

The spelling of 2216344397 in words is "two billion, two hundred sixteen million, three hundred forty-four thousand, three hundred ninety-seven".