22220112221111 has 4 divisors (see below), whose sum is σ = 25394413966992. Its totient is φ = 19045810475232.

The previous prime is 22220112221101. The next prime is 22220112221113. The reversal of 22220112221111 is 11112221102222.

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 22220112221111 - 2²² = 22220108026807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220112221113) 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, 1587150872930 + ... + 1587150872943.

It is an arithmetic number, because the mean of its divisors is an integer number (6348603491748).

Almost surely, 2^{22220112221111} is an apocalyptic number.

22220112221111 is a deficient number, since it is larger than the sum of its proper divisors (3174301745881).

22220112221111 is an equidigital number, since it uses as much as digits as its factorization.

22220112221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174301745880.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22220112221111 its reverse (11112221102222), we get a palindrome (33332333323333).

The spelling of 22220112221111 in words is "twenty-two trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".