222222012211 has 4 divisors (see below), whose sum is σ = 222527682832. Its totient is φ = 221916341592.

The previous prime is 222222012209. The next prime is 222222012223. The reversal of 222222012211 is 112210222222.

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

It is a cyclic number.

It is not a de Polignac number, because 222222012211 - 2¹ = 222222012209 is a prime.

It is a super-2 number, since 2×222222012211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222222012281) 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, 152834220 + ... + 152835673.

It is an arithmetic number, because the mean of its divisors is an integer number (55631920708).

Almost surely, 2^222222012211 is an apocalyptic number.

222222012211 is a deficient number, since it is larger than the sum of its proper divisors (305670621).

222222012211 is an equidigital number, since it uses as much as digits as its factorization.

222222012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305670620.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222012211 its reverse (112210222222), we get a palindrome (334432234433).

The spelling of 222222012211 in words is "two hundred twenty-two billion, two hundred twenty-two million, twelve thousand, two hundred eleven".