222222212011 has 4 divisors (see below), whose sum is σ = 225538961512. Its totient is φ = 218905462512.

The previous prime is 222222211999. The next prime is 222222212033. The reversal of 222222212011 is 110212222222.

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 222222212011 - 2²⁷ = 222087994283 is a prime.

It is a super-2 number, since 2×222222212011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222222212011.

It is not an unprimeable number, because it can be changed into a prime (222222215011) 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, 1658374650 + ... + 1658374783.

It is an arithmetic number, because the mean of its divisors is an integer number (56384740378).

Almost surely, 2^222222212011 is an apocalyptic number.

222222212011 is a deficient number, since it is larger than the sum of its proper divisors (3316749501).

222222212011 is an equidigital number, since it uses as much as digits as its factorization.

222222212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316749500.

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

Adding to 222222212011 its reverse (110212222222), we get a palindrome (332434434233).

The spelling of 222222212011 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, eleven".