222210021211 has 4 divisors (see below), whose sum is σ = 222227880424. Its totient is φ = 222192162000.

The previous prime is 222210021181. The next prime is 222210021221. The reversal of 222210021211 is 112120012222.

It is a happy number.

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 222210021211 - 2¹⁷ = 222209890139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222210021221) 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, 8910930 + ... + 8935831.

It is an arithmetic number, because the mean of its divisors is an integer number (55556970106).

Almost surely, 2^222210021211 is an apocalyptic number.

222210021211 is a deficient number, since it is larger than the sum of its proper divisors (17859213).

222210021211 is a wasteful number, since it uses less digits than its factorization.

222210021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17859212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222210021211 its reverse (112120012222), we get a palindrome (334330033433).

The spelling of 222210021211 in words is "two hundred twenty-two billion, two hundred ten million, twenty-one thousand, two hundred eleven".