212220222112 has 24 divisors (see below), whose sum is σ = 418947028416. Its totient is φ = 105820976832.

The previous prime is 212220222079. The next prime is 212220222187. The reversal of 212220222112 is 211222022212.

It is a super-2 number, since 2×212220222112² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212220222112.

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, 9023518 + ... + 9047005.

It is an arithmetic number, because the mean of its divisors is an integer number (17456126184).

Almost surely, 2^212220222112 is an apocalyptic number.

It is an amenable number.

212220222112 is a deficient number, since it is larger than the sum of its proper divisors (206726806304).

212220222112 is a wasteful number, since it uses less digits than its factorization.

212220222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18070900 (or 18070892 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212220222112 its reverse (211222022212), we get a palindrome (423442244324).

The spelling of 212220222112 in words is "two hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twelve".