22220202221111 has 4 divisors (see below), whose sum is σ = 22243815614424. Its totient is φ = 22196588827800.

The previous prime is 22220202221099. The next prime is 22220202221179. The reversal of 22220202221111 is 11112220202222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220202221111 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 (22220202221311) 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, 11806695245 + ... + 11806697126.

It is an arithmetic number, because the mean of its divisors is an integer number (5560953903606).

Almost surely, 2^{22220202221111} is an apocalyptic number.

22220202221111 is a deficient number, since it is larger than the sum of its proper divisors (23613393313).

22220202221111 is an equidigital number, since it uses as much as digits as its factorization.

22220202221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23613393312.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22220202221111 its reverse (11112220202222), we get a palindrome (33332422423333).

The spelling of 22220202221111 in words is "twenty-two trillion, two hundred twenty billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".