22221212013 has 96 divisors (see below), whose sum is σ = 43190784000. Its totient is φ = 10632021120.

The previous prime is 22221211979. The next prime is 22221212017. The reversal of 22221212013 is 31021212222.

It is not a de Polignac number, because 22221212013 - 2¹⁴ = 22221195629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221212017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4493020 + ... + 4497962.

It is an arithmetic number, because the mean of its divisors is an integer number (449904000).

Almost surely, 2^22221212013 is an apocalyptic number.

It is an amenable number.

22221212013 is a deficient number, since it is larger than the sum of its proper divisors (20969571987).

22221212013 is a wasteful number, since it uses less digits than its factorization.

22221212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22221212013 its reverse (31021212222), we get a palindrome (53242424235).

The spelling of 22221212013 in words is "twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, thirteen".