212010222166 has 8 divisors (see below), whose sum is σ = 318071250360. Its totient is φ = 105986472048.

The previous prime is 212010222161. The next prime is 212010222167. The reversal of 212010222166 is 661222010212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212010222166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010222161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9305296 + ... + 9328051.

It is an arithmetic number, because the mean of its divisors is an integer number (39758906295).

Almost surely, 2^212010222166 is an apocalyptic number.

212010222166 is a deficient number, since it is larger than the sum of its proper divisors (106061028194).

212010222166 is a wasteful number, since it uses less digits than its factorization.

212010222166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18639038.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 212010222166 its reverse (661222010212), we get a palindrome (873232232378).

The spelling of 212010222166 in words is "two hundred twelve billion, ten million, two hundred twenty-two thousand, one hundred sixty-six".