22111220203 has 4 divisors (see below), whose sum is σ = 22117543000. Its totient is φ = 22104897408.

The previous prime is 22111220191. The next prime is 22111220237. The reversal of 22111220203 is 30202211122.

It is a happy number.

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-22111220203 is a prime.

It is a super-2 number, since 2×22111220203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111220603) 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, 3156150 + ... + 3163147.

It is an arithmetic number, because the mean of its divisors is an integer number (5529385750).

Almost surely, 2^22111220203 is an apocalyptic number.

22111220203 is a deficient number, since it is larger than the sum of its proper divisors (6322797).

22111220203 is an equidigital number, since it uses as much as digits as its factorization.

22111220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322796.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22111220203 its reverse (30202211122), we get a palindrome (52313431325).

The spelling of 22111220203 in words is "twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred three".