2212221100 has 36 divisors (see below), whose sum is σ = 4805645544. Its totient is φ = 883943680.

The previous prime is 2212221073. The next prime is 2212221131. The reversal of 2212221100 is 11222122.

It is a happy number.

2212221100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86379 + ... + 109021.

It is an arithmetic number, because the mean of its divisors is an integer number (133490154).

Almost surely, 2^2212221100 is an apocalyptic number.

2212221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212221100 is an abundant number, since it is smaller than the sum of its proper divisors (2593424444).

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

2212221100 is a wasteful number, since it uses less digits than its factorization.

2212221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23634 (or 23627 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2212221100 is about 47034.2545385807. The cubic root of 2212221100 is about 1302.9952827267.

Adding to 2212221100 its reverse (11222122), we get a palindrome (2223443222).

The spelling of 2212221100 in words is "two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred".