22122222100111 has 4 divisors (see below), whose sum is σ = 25282539542992. Its totient is φ = 18961904657232.

The previous prime is 22122222100049. The next prime is 22122222100129. The reversal of 22122222100111 is 11100122222122.

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 22122222100111 - 2¹³ = 22122222091919 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 (22122222109111) 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, 1580158721430 + ... + 1580158721443.

It is an arithmetic number, because the mean of its divisors is an integer number (6320634885748).

Almost surely, 2^{22122222100111} is an apocalyptic number.

22122222100111 is a deficient number, since it is larger than the sum of its proper divisors (3160317442881).

22122222100111 is an equidigital number, since it uses as much as digits as its factorization.

22122222100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160317442880.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22122222100111 its reverse (11100122222122), we get a palindrome (33222344322233).

The spelling of 22122222100111 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one hundred eleven".