212666332777 has 32 divisors (see below), whose sum is σ = 242864455680. Its totient is φ = 184978909440.

The previous prime is 212666332741. The next prime is 212666332783. The reversal of 212666332777 is 777233666212.

It is not a de Polignac number, because 212666332777 - 2¹⁵ = 212666300009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212666336777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4637752 + ... + 4683382.

It is an arithmetic number, because the mean of its divisors is an integer number (7589514240).

Almost surely, 2^212666332777 is an apocalyptic number.

It is an amenable number.

212666332777 is a deficient number, since it is larger than the sum of its proper divisors (30198122903).

212666332777 is a wasteful number, since it uses less digits than its factorization.

212666332777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46021.

The product of its digits is 5334336, while the sum is 52.

Adding to 212666332777 its reverse (777233666212), we get a palindrome (989899998989).

The spelling of 212666332777 in words is "two hundred twelve billion, six hundred sixty-six million, three hundred thirty-two thousand, seven hundred seventy-seven".