22220212213 has 4 divisors (see below), whose sum is σ = 22302205888. Its totient is φ = 22138218540.

The previous prime is 22220212199. The next prime is 22220212229. The reversal of 22220212213 is 31221202222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22220212213 - 2⁹ = 22220211701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220212243) 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, 40996431 + ... + 40996972.

It is an arithmetic number, because the mean of its divisors is an integer number (5575551472).

Almost surely, 2^22220212213 is an apocalyptic number.

It is an amenable number.

22220212213 is a deficient number, since it is larger than the sum of its proper divisors (81993675).

22220212213 is an equidigital number, since it uses as much as digits as its factorization.

22220212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81993674.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22220212213 its reverse (31221202222), we get a palindrome (53441414435).

Subtracting 22220212213 from its reverse (31221202222), we obtain a palindrome (9000990009).

The spelling of 22220212213 in words is "twenty-two billion, two hundred twenty million, two hundred twelve thousand, two hundred thirteen".