2221312011 has 8 divisors (see below), whose sum is σ = 3010302864. Its totient is φ = 1456597920.

The previous prime is 2221311971. The next prime is 2221312013. The reversal of 2221312011 is 1102131222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221312011 - 2⁶ = 2221311947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221312013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6068976 + ... + 6069341.

It is an arithmetic number, because the mean of its divisors is an integer number (376287858).

Almost surely, 2^2221312011 is an apocalyptic number.

2221312011 is a deficient number, since it is larger than the sum of its proper divisors (788990853).

2221312011 is a wasteful number, since it uses less digits than its factorization.

2221312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138381.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2221312011 is about 47130.7968424044. The cubic root of 2221312011 is about 1304.7776882355. Note that the first 3 decimals are identical.

Adding to 2221312011 its reverse (1102131222), we get a palindrome (3323443233).

The spelling of 2221312011 in words is "two billion, two hundred twenty-one million, three hundred twelve thousand, eleven".