22221013013 has 4 divisors (see below), whose sum is σ = 22251328908. Its totient is φ = 22190697120.

The previous prime is 22221012991. The next prime is 22221013027. The reversal of 22221013013 is 31031012222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19490114449 + 2730898564 = 139607^2 + 52258^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221013013 - 2¹⁶ = 22220947477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221012982 and 22221013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221013093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15156848 + ... + 15158313.

It is an arithmetic number, because the mean of its divisors is an integer number (5562832227).

Almost surely, 2^22221013013 is an apocalyptic number.

It is an amenable number.

22221013013 is a deficient number, since it is larger than the sum of its proper divisors (30315895).

22221013013 is an equidigital number, since it uses as much as digits as its factorization.

22221013013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30315894.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22221013013 its reverse (31031012222), we get a palindrome (53252025235).

The spelling of 22221013013 in words is "twenty-two billion, two hundred twenty-one million, thirteen thousand, thirteen".