22222201221012 has 96 divisors (see below), whose sum is σ = 58902088089600. Its totient is φ = 6464202820992.

The previous prime is 22222201220977. The next prime is 22222201221013. The reversal of 22222201221012 is 21012210222222.

It is a self number, because there is not a number n which added to its sum of digits gives 22222201221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222201221013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6406308 + ... + 9245819.

It is an arithmetic number, because the mean of its divisors is an integer number (613563417600).

Almost surely, 2^{22222201221012} is an apocalyptic number.

It is an amenable number.

22222201221012 is an abundant number, since it is smaller than the sum of its proper divisors (36679886868588).

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

22222201221012 is a wasteful number, since it uses less digits than its factorization.

22222201221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15652645 (or 15652643 counting only the distinct ones).

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

Adding to 22222201221012 its reverse (21012210222222), we get a palindrome (43234411443234).

The spelling of 22222201221012 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, twelve".