2222221213 has 8 divisors (see below), whose sum is σ = 2229901560. Its totient is φ = 2214554880.

The previous prime is 2222221201. The next prime is 2222221219. The reversal of 2222221213 is 3121222222.

2222221213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 50381604 + 2171839609 = 7098^2 + 46603^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222221213 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 (2222221219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384481 + ... + 390217.

It is an arithmetic number, because the mean of its divisors is an integer number (278737695).

Almost surely, 2^2222221213 is an apocalyptic number.

It is an amenable number.

2222221213 is a deficient number, since it is larger than the sum of its proper divisors (7680347).

2222221213 is an equidigital number, since it uses as much as digits as its factorization.

2222221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007.

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

The square root of 2222221213 is about 47140.4413746838. The cubic root of 2222221213 is about 1304.9556828410.

Adding to 2222221213 its reverse (3121222222), we get a palindrome (5343443435).

The spelling of 2222221213 in words is "two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred thirteen".