22221221111000 has 32 divisors (see below), whose sum is σ = 51997657402080. Its totient is φ = 8888488444000.

The previous prime is 22221221110999. The next prime is 22221221111003. The reversal of 22221221111000 is 11112212222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221221111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221221111003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11110609556 + ... + 11110611555.

It is an arithmetic number, because the mean of its divisors is an integer number (1624926793815).

Almost surely, 2^{22221221111000} is an apocalyptic number.

22221221111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221221111000 is an abundant number, since it is smaller than the sum of its proper divisors (29776436291080).

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

22221221111000 is a wasteful number, since it uses less digits than its factorization.

22221221111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22221221132 (or 22221221118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221221111000 its reverse (11112212222), we get a palindrome (22232333323222).

The spelling of 22221221111000 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand".