222021201212 has 12 divisors (see below), whose sum is σ = 394009456176. Its totient is φ = 109447070880.

The previous prime is 222021201187. The next prime is 222021201247. The reversal of 222021201212 is 212102120222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390882113 + ... + 390882680.

It is an arithmetic number, because the mean of its divisors is an integer number (32834121348).

Almost surely, 2^222021201212 is an apocalyptic number.

It is an amenable number.

222021201212 is a deficient number, since it is larger than the sum of its proper divisors (171988254964).

222021201212 is a wasteful number, since it uses less digits than its factorization.

222021201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781764868 (or 781764866 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222021201212 its reverse (212102120222), we get a palindrome (434123321434).

The spelling of 222021201212 in words is "two hundred twenty-two billion, twenty-one million, two hundred one thousand, two hundred twelve".