212222132 has 12 divisors (see below), whose sum is σ = 372425760. Its totient is φ = 105814776.

The previous prime is 212222113. The next prime is 212222149. The reversal of 212222132 is 231222212.

It is a self number, because there is not a number n which added to its sum of digits gives 212222132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72458 + ... + 75329.

It is an arithmetic number, because the mean of its divisors is an integer number (31035480).

Almost surely, 2^212222132 is an apocalyptic number.

It is an amenable number.

212222132 is a deficient number, since it is larger than the sum of its proper divisors (160203628).

212222132 is a wasteful number, since it uses less digits than its factorization.

212222132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148150 (or 148148 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 212222132 is about 14567.8458256532. The cubic root of 212222132 is about 596.4813799315.

Adding to 212222132 its reverse (231222212), we get a palindrome (443444344).

The spelling of 212222132 in words is "two hundred twelve million, two hundred twenty-two thousand, one hundred thirty-two".