222211121020111 has 4 divisors (see below), whose sum is σ = 222290738049424. Its totient is φ = 222131503990800.

The previous prime is 222211121020093. The next prime is 222211121020117. The reversal of 222211121020111 is 111020121112222.

It is a happy number.

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 222211121020111 - 2²⁷ = 222210986802383 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 (222211121020117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39808510470 + ... + 39808516051.

It is an arithmetic number, because the mean of its divisors is an integer number (55572684512356).

Almost surely, 2^{222211121020111} is an apocalyptic number.

222211121020111 is a deficient number, since it is larger than the sum of its proper divisors (79617029313).

222211121020111 is an equidigital number, since it uses as much as digits as its factorization.

222211121020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79617029312.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222211121020111 its reverse (111020121112222), we get a palindrome (333231242132333).

The spelling of 222211121020111 in words is "two hundred twenty-two trillion, two hundred eleven billion, one hundred twenty-one million, twenty thousand, one hundred eleven".