222112211201111 has 32 divisors (see below), whose sum is σ = 278434829500416. Its totient is φ = 172127561004000.

The previous prime is 222112211201099. The next prime is 222112211201123. The reversal of 222112211201111 is 111102112211222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222112211201099) and next prime (222112211201123).

It is not a de Polignac number, because 222112211201111 - 2¹⁸ = 222112210938967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112211281111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60440576 + ... + 64010058.

It is an arithmetic number, because the mean of its divisors is an integer number (8701088421888).

Almost surely, 2^{222112211201111} is an apocalyptic number.

222112211201111 is a deficient number, since it is larger than the sum of its proper divisors (56322618299305).

222112211201111 is a wasteful number, since it uses less digits than its factorization.

222112211201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573923.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 222112211201111 its reverse (111102112211222), we get a palindrome (333214323412333).

The spelling of 222112211201111 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred eleven million, two hundred one thousand, one hundred eleven".