2221330212 has 18 divisors (see below), whose sum is σ = 5615029238. Its totient is φ = 740443392.

The previous prime is 2221330201. The next prime is 2221330231. The reversal of 2221330212 is 2120331222.

It can be written as a sum of positive squares in only one way, i.e., 1895383296 + 325946916 = 43536^2 + 18054^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30851773 + ... + 30851844.

Almost surely, 2^2221330212 is an apocalyptic number.

It is an amenable number.

2221330212 is an abundant number, since it is smaller than the sum of its proper divisors (3393699026).

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

2221330212 is a wasteful number, since it uses less digits than its factorization.

2221330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61703627 (or 61703622 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2221330212 is about 47130.9899323152. The cubic root of 2221330212 is about 1304.7812519243.

Adding to 2221330212 its reverse (2120331222), we get a palindrome (4341661434).

It can be divided in two parts, 22213 and 30212, that added together give a palindrome (52425).

The spelling of 2221330212 in words is "two billion, two hundred twenty-one million, three hundred thirty thousand, two hundred twelve".