22221022201212 has 24 divisors (see below), whose sum is σ = 51849375580800. Its totient is φ = 7406961146416.

The previous prime is 22221022201171. The next prime is 22221022201229. The reversal of 22221022201212 is 21210222012222.

22221022201212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3751512 + ... + 7649567.

It is an arithmetic number, because the mean of its divisors is an integer number (2160390649200).

Almost surely, 2^{22221022201212} is an apocalyptic number.

It is an amenable number.

22221022201212 is an abundant number, since it is smaller than the sum of its proper divisors (29628353379588).

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

22221022201212 is a wasteful number, since it uses less digits than its factorization.

22221022201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563505 (or 11563503 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221022201212 its reverse (21210222012222), we get a palindrome (43431244213434).

The spelling of 22221022201212 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-two million, two hundred one thousand, two hundred twelve".