2212666945 has 16 divisors (see below), whose sum is σ = 2796373440. Its totient is φ = 1676113344.

The previous prime is 2212666921. The next prime is 2212666957. The reversal of 2212666945 is 5496662122.

It is a cyclic number.

It is not a de Polignac number, because 2212666945 - 2⁷ = 2212666817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230614 + ... + 240016.

It is an arithmetic number, because the mean of its divisors is an integer number (174773340).

Almost surely, 2^2212666945 is an apocalyptic number.

It is an amenable number.

2212666945 is a deficient number, since it is larger than the sum of its proper divisors (583706495).

2212666945 is a wasteful number, since it uses less digits than its factorization.

2212666945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11904.

The product of its digits is 311040, while the sum is 43.

The square root of 2212666945 is about 47038.9938774205. The cubic root of 2212666945 is about 1303.0828108841.

The spelling of 2212666945 in words is "two billion, two hundred twelve million, six hundred sixty-six thousand, nine hundred forty-five".