22211112221000 has 256 divisors, whose sum is σ = 56846133227520. Its totient is φ = 8086448640000.

The previous prime is 22211112220951. The next prime is 22211112221047. The reversal of 22211112221000 is 12221111222.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22211112221000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 796283054 + ... + 796310946.

It is an arithmetic number, because the mean of its divisors is an integer number (222055207920).

Almost surely, 2^{22211112221000} is an apocalyptic number.

22211112221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22211112221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28423066613760).

22211112221000 is an abundant number, since it is smaller than the sum of its proper divisors (34635021006520).

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

22211112221000 is a wasteful number, since it uses less digits than its factorization.

22211112221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29473 (or 29459 counting only the distinct ones).

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

Adding to 22211112221000 its reverse (12221111222), we get a palindrome (22223333332222).

The spelling of 22211112221000 in words is "twenty-two trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand".