2221211000 has 64 divisors (see below), whose sum is σ = 5227092000. Its totient is φ = 883449600.

The previous prime is 2221210997. The next prime is 2221211009. The reversal of 2221211000 is 1121222.

It is a happy number.

2221211000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221211009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172796 + ... + 185204.

Almost surely, 2^2221211000 is an apocalyptic number.

2221211000 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 2221211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613546000).

2221211000 is an abundant number, since it is smaller than the sum of its proper divisors (3005881000).

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

2221211000 is a wasteful number, since it uses less digits than its factorization.

2221211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12609 (or 12595 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2221211000 is about 47129.7252272915. The cubic root of 2221211000 is about 1304.7579103000.

Adding to 2221211000 its reverse (1121222), we get a palindrome (2222332222).

The spelling of 2221211000 in words is "two billion, two hundred twenty-one million, two hundred eleven thousand".