22221220220212 has 48 divisors (see below), whose sum is σ = 42568959967744. Its totient is φ = 10086875568000.

The previous prime is 22221220220201. The next prime is 22221220220237. The reversal of 22221220220212 is 21202202212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34224637 + ... + 34867867.

Almost surely, 2^{22221220220212} is an apocalyptic number.

It is an amenable number.

22221220220212 is a deficient number, since it is larger than the sum of its proper divisors (20347739747532).

22221220220212 is a wasteful number, since it uses less digits than its factorization.

22221220220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654200 (or 654198 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22221220220212 its reverse (21202202212222), we get a palindrome (43423422432434).

The spelling of 22221220220212 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, two hundred twelve".