22220233212 has 12 divisors (see below), whose sum is σ = 51847210856. Its totient is φ = 7406744400.

The previous prime is 22220233153. The next prime is 22220233213. The reversal of 22220233212 is 21233202222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220233213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925843039 + ... + 925843062.

Almost surely, 2^22220233212 is an apocalyptic number.

It is an amenable number.

22220233212 is an abundant number, since it is smaller than the sum of its proper divisors (29626977644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22220233212 is a wasteful number, since it uses less digits than its factorization.

22220233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851686108 (or 1851686106 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22220233212 its reverse (21233202222), we get a palindrome (43453435434).

The spelling of 22220233212 in words is "twenty-two billion, two hundred twenty million, two hundred thirty-three thousand, two hundred twelve".