22201212222012 has 24 divisors (see below), whose sum is σ = 51803848539856. Its totient is φ = 7400258356608.

The previous prime is 22201212222001. The next prime is 22201212222019. The reversal of 22201212222012 is 21022221210222.

It is a self number, because there is not a number n which added to its sum of digits gives 22201212222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201212222019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17578963 + ... + 18799530.

Almost surely, 2^{22201212222012} is an apocalyptic number.

It is an amenable number.

22201212222012 is an abundant number, since it is smaller than the sum of its proper divisors (29602636317844).

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

22201212222012 is a wasteful number, since it uses less digits than its factorization.

22201212222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36429357 (or 36429355 counting only the distinct ones).

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

Adding to 22201212222012 its reverse (21022221210222), we get a palindrome (43223433432234).

The spelling of 22201212222012 in words is "twenty-two trillion, two hundred one billion, two hundred twelve million, two hundred twenty-two thousand, twelve".