2311221212 has 12 divisors (see below), whose sum is σ = 4045287456. Its totient is φ = 1155424800.

The previous prime is 2311221167. The next prime is 2311221221. The reversal of 2311221212 is 2121221132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16289 + ... + 69912.

It is an arithmetic number, because the mean of its divisors is an integer number (337107288).

Almost surely, 2^2311221212 is an apocalyptic number.

It is an amenable number.

2311221212 is a deficient number, since it is larger than the sum of its proper divisors (1734066244).

2311221212 is a wasteful number, since it uses less digits than its factorization.

2311221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92908 (or 92906 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2311221212 is about 48075.1621110111. The cubic root of 2311221212 is about 1322.1493167668.

Adding to 2311221212 its reverse (2121221132), we get a palindrome (4432442344).

The spelling of 2311221212 in words is "two billion, three hundred eleven million, two hundred twenty-one thousand, two hundred twelve".