322212131666 has 4 divisors (see below), whose sum is σ = 483318197502. Its totient is φ = 161106065832.

The previous prime is 322212131623. The next prime is 322212131701. The reversal of 322212131666 is 666131212223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666131212223 = 359 ⋅1855518697.

It can be written as a sum of positive squares in only one way, i.e., 217869565225 + 104342566441 = 466765^2 + 323021^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80553032915 + ... + 80553032918.

Almost surely, 2^322212131666 is an apocalyptic number.

322212131666 is a deficient number, since it is larger than the sum of its proper divisors (161106065836).

322212131666 is a wasteful number, since it uses less digits than its factorization.

322212131666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161106065835.

The product of its digits is 31104, while the sum is 35.

Adding to 322212131666 its reverse (666131212223), we get a palindrome (988343343889).

The spelling of 322212131666 in words is "three hundred twenty-two billion, two hundred twelve million, one hundred thirty-one thousand, six hundred sixty-six".