22011222000 has 160 divisors (see below), whose sum is σ = 71339433984. Its totient is φ = 5838624000.

The previous prime is 22011221983. The next prime is 22011222001. The reversal of 22011222000 is 22211022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011222001) 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, 1136397 + ... + 1155603.

Almost surely, 2^22011222000 is an apocalyptic number.

22011222000 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 22011222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35669716992).

22011222000 is an abundant number, since it is smaller than the sum of its proper divisors (49328211984).

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

22011222000 is a wasteful number, since it uses less digits than its factorization.

22011222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19424 (or 19408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22011222000 its reverse (22211022), we get a palindrome (22033433022).

The spelling of 22011222000 in words is "twenty-two billion, eleven million, two hundred twenty-two thousand".