2222211210221 has 4 divisors (see below), whose sum is σ = 2222220790944. Its totient is φ = 2222201629500.

The previous prime is 2222211210199. The next prime is 2222211210223. The reversal of 2222211210221 is 1220121122222.

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 2222211210221 - 2¹⁴ = 2222211193837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222211210193 and 2222211210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222211210223) 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, 4433585 + ... + 4909286.

It is an arithmetic number, because the mean of its divisors is an integer number (555555197736).

Almost surely, 2^{2222211210221} is an apocalyptic number.

It is an amenable number.

2222211210221 is a deficient number, since it is larger than the sum of its proper divisors (9580723).

2222211210221 is an equidigital number, since it uses as much as digits as its factorization.

2222211210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580722.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2222211210221 its reverse (1220121122222), we get a palindrome (3442332332443).

The spelling of 2222211210221 in words is "two trillion, two hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".