2221210212 has 48 divisors (see below), whose sum is σ = 5585764800. Its totient is φ = 682927488.

The previous prime is 2221210163. The next prime is 2221210213. The reversal of 2221210212 is 2120121222.

It is a junction number, because it is equal to n+sod(n) for n = 2221210191 and 2221210200.

It is not an unprimeable number, because it can be changed into a prime (2221210213) 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, 232914 + ... + 242262.

It is an arithmetic number, because the mean of its divisors is an integer number (116370100).

Almost surely, 2^2221210212 is an apocalyptic number.

It is an amenable number.

2221210212 is an abundant number, since it is smaller than the sum of its proper divisors (3364554588).

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

2221210212 is a wasteful number, since it uses less digits than its factorization.

2221210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10892 (or 10890 counting only the distinct ones).

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

The square root of 2221210212 is about 47129.7168673863. The cubic root of 2221210212 is about 1304.7577560074.

Adding to 2221210212 its reverse (2120121222), we get a palindrome (4341331434).

The spelling of 2221210212 in words is "two billion, two hundred twenty-one million, two hundred ten thousand, two hundred twelve".