2211222000 has 160 divisors (see below), whose sum is σ = 7677633600. Its totient is φ = 544281600.

The previous prime is 2211221989. The next prime is 2211222029. The reversal of 2211222000 is 2221122.

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

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63826 + ... + 92174.

It is an arithmetic number, because the mean of its divisors is an integer number (47985210).

Almost surely, 2^2211222000 is an apocalyptic number.

2211222000 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 2211222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3838816800).

2211222000 is an abundant number, since it is smaller than the sum of its proper divisors (5466411600).

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

2211222000 is a wasteful number, since it uses less digits than its factorization.

2211222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28388 (or 28372 counting only the distinct ones).

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

The square root of 2211222000 is about 47023.6323565077. The cubic root of 2211222000 is about 1302.7990969995.

Adding to 2211222000 its reverse (2221122), we get a palindrome (2213443122).

It can be divided in two parts, 221 and 1222000, that added together give a palindrome (1222221).

The spelling of 2211222000 in words is "two billion, two hundred eleven million, two hundred twenty-two thousand".