22022211212 has 48 divisors (see below), whose sum is σ = 42488140800. Its totient is φ = 9940993920.

The previous prime is 22022211191. The next prime is 22022211311. The reversal of 22022211212 is 21211222022.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 450464 + ... + 496952.

It is an arithmetic number, because the mean of its divisors is an integer number (885169600).

Almost surely, 2^22022211212 is an apocalyptic number.

It is an amenable number.

22022211212 is a deficient number, since it is larger than the sum of its proper divisors (20465929588).

22022211212 is a wasteful number, since it uses less digits than its factorization.

22022211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46806 (or 46804 counting only the distinct ones).

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

Adding to 22022211212 its reverse (21211222022), we get a palindrome (43233433234).

The spelling of 22022211212 in words is "twenty-two billion, twenty-two million, two hundred eleven thousand, two hundred twelve".