212021111222 has 8 divisors (see below), whose sum is σ = 320166108000. Its totient is φ = 105299075224.

The previous prime is 212021111201. The next prime is 212021111251. The reversal of 212021111222 is 222111120212.

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 212021111222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355739822 + ... + 355740417.

It is an arithmetic number, because the mean of its divisors is an integer number (40020763500).

Almost surely, 2^212021111222 is an apocalyptic number.

212021111222 is a deficient number, since it is larger than the sum of its proper divisors (108144996778).

212021111222 is a wasteful number, since it uses less digits than its factorization.

212021111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711480390.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212021111222 its reverse (222111120212), we get a palindrome (434132231434).

The spelling of 212021111222 in words is "two hundred twelve billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".