2212221210 has 64 divisors (see below), whose sum is σ = 5521582080. Its totient is φ = 566558720.

The previous prime is 2212221173. The next prime is 2212221241. The reversal of 2212221210 is 121222122.

2212221210 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2212221210.

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, 159514 + ... + 172826.

It is an arithmetic number, because the mean of its divisors is an integer number (86274720).

Almost surely, 2^2212221210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212221210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760791040).

2212221210 is an abundant number, since it is smaller than the sum of its proper divisors (3309360870).

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

2212221210 is a wasteful number, since it uses less digits than its factorization.

2212221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13543.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2212221210 is about 47034.2557079412. The cubic root of 2212221210 is about 1302.9953043234.

Adding to 2212221210 its reverse (121222122), we get a palindrome (2333443332).

The spelling of 2212221210 in words is "two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred ten".