222212222211 has 8 divisors (see below), whose sum is σ = 338609100544. Its totient is φ = 126978412680.

The previous prime is 222212222189. The next prime is 222212222237. The reversal of 222212222211 is 112222212222.

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

It is not a de Polignac number, because 222212222211 - 2¹¹ = 222212220163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10581534391 = 222212222211 / (2 + 2 + 2 + 2 + 1 + 2 + 2 + 2 + 2 + 2 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222212022211) 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, 5290767175 + ... + 5290767216.

It is an arithmetic number, because the mean of its divisors is an integer number (42326137568).

Almost surely, 2^222212222211 is an apocalyptic number.

222212222211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222212222211 is a deficient number, since it is larger than the sum of its proper divisors (116396878333).

222212222211 is a wasteful number, since it uses less digits than its factorization.

222212222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581534401.

The product of its digits is 512, while the sum is 21.

Adding to 222212222211 its reverse (112222212222), we get a palindrome (334434434433).

The spelling of 222212222211 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, two hundred eleven".