222211001111111 has 4 divisors (see below), whose sum is σ = 222233512619424. Its totient is φ = 222188489602800.

The previous prime is 222211001111063. The next prime is 222211001111129. The reversal of 222211001111111 is 111111100112222.

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 222211001111111 - 2¹⁴ = 222211001094727 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 222211001111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211001113111) 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, 11255739350 + ... + 11255759091.

It is an arithmetic number, because the mean of its divisors is an integer number (55558378154856).

Almost surely, 2^{222211001111111} is an apocalyptic number.

222211001111111 is a deficient number, since it is larger than the sum of its proper divisors (22511508313).

222211001111111 is an equidigital number, since it uses as much as digits as its factorization.

222211001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22511508312.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 222211001111111 its reverse (111111100112222), we get a palindrome (333322101223333).

The spelling of 222211001111111 in words is "two hundred twenty-two trillion, two hundred eleven billion, one million, one hundred eleven thousand, one hundred eleven".