2212680666429 has 12 divisors (see below), whose sum is σ = 3196216342332. Its totient is φ = 1475064115200.

The previous prime is 2212680666349. The next prime is 2212680666503. The reversal of 2212680666429 is 9246660862122.

It can be written as a sum of positive squares in 2 ways, for example, as 206477542404 + 2006203124025 = 454398^2 + 1416405^2 .

It is not a de Polignac number, because 2212680666429 - 2⁹ = 2212680665917 is a prime.

It is a super-2 number, since 2×2212680666429² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212680666929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4444612 + ... + 4917309.

It is an arithmetic number, because the mean of its divisors is an integer number (266351361861).

Almost surely, 2^{2212680666429} is an apocalyptic number.

It is an amenable number.

2212680666429 is a deficient number, since it is larger than the sum of its proper divisors (983535675903).

2212680666429 is a wasteful number, since it uses less digits than its factorization.

2212680666429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388188 (or 9388185 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 2212680666429 in words is "two trillion, two hundred twelve billion, six hundred eighty million, six hundred sixty-six thousand, four hundred twenty-nine".