222212011 has 12 divisors (see below), whose sum is σ = 272097480. Its totient is φ = 180442080.

The previous prime is 222212009. The next prime is 222212063. The reversal of 222212011 is 110212222.

222212011 = T₁₇₁ + T₁₇₂ + ... + T₁₁₀₁.

It is a happy number.

It is not a de Polignac number, because 222212011 - 2¹ = 222212009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222211982 and 222212000.

It is not an unprimeable number, because it can be changed into a prime (222212611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118410 + ... + 120271.

It is an arithmetic number, because the mean of its divisors is an integer number (22674790).

Almost surely, 2^222212011 is an apocalyptic number.

222212011 is a deficient number, since it is larger than the sum of its proper divisors (49885469).

222212011 is a wasteful number, since it uses less digits than its factorization.

222212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238714 (or 238707 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 222212011 is about 14906.7773512587. Note that the first 3 decimals coincide. The cubic root of 222212011 is about 605.6975866242.

Adding to 222212011 its reverse (110212222), we get a palindrome (332424233).

The spelling of 222212011 in words is "two hundred twenty-two million, two hundred twelve thousand, eleven".