2212340647 has 6 divisors (see below), whose sum is σ = 2431746464. Its totient is φ = 2011218660.

The previous prime is 2212340623. The next prime is 2212340693. The reversal of 2212340647 is 7460432122.

It is a happy number.

It is not a de Polignac number, because 2212340647 - 2¹⁹ = 2211816359 is a prime.

It is a super-2 number, since 2×2212340647² = 9788902276736757218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212340047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9141783 + ... + 9142024.

Almost surely, 2^2212340647 is an apocalyptic number.

2212340647 is a deficient number, since it is larger than the sum of its proper divisors (219405817).

2212340647 is a wasteful number, since it uses less digits than its factorization.

2212340647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18283829 (or 18283818 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 2212340647 is about 47035.5253717868. The cubic root of 2212340647 is about 1303.0187533119.

Adding to 2212340647 its reverse (7460432122), we get a palindrome (9672772769).

The spelling of 2212340647 in words is "two billion, two hundred twelve million, three hundred forty thousand, six hundred forty-seven".