222021111121111 has 4 divisors (see below), whose sum is σ = 222021157087152. Its totient is φ = 222021065155072.

The previous prime is 222021111121109. The next prime is 222021111121157. The reversal of 222021111121111 is 111121111120222.

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 222021111121111 - 2¹ = 222021111121109 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 (222021111121811) 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, 14756266 + ... + 25725271.

It is an arithmetic number, because the mean of its divisors is an integer number (55505289271788).

Almost surely, 2^{222021111121111} is an apocalyptic number.

222021111121111 is a deficient number, since it is larger than the sum of its proper divisors (45966041).

222021111121111 is an equidigital number, since it uses as much as digits as its factorization.

222021111121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45966040.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 222021111121111 its reverse (111121111120222), we get a palindrome (333142222241333).

The spelling of 222021111121111 in words is "two hundred twenty-two trillion, twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred eleven".