20111222203 has 2 divisors, whose sum is σ = 20111222204.
Its totient is φ = 20111222202.
The previous prime is 20111222191. The next prime is 20111222233. The reversal of 20111222203 is 30222211102.
Adding to 20111222203 its reverse (30222211102), we get a palindrome (50333433305).
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-20111222203 is a prime.
It is a super-2 number, since 2×201112222032 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (20111222233) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055611101 + 10055611102.
It is an arithmetic number, because the mean of its divisors is an integer number (10055611102).
Almost surely, 220111222203 is an apocalyptic number.
20111222203 is a deficient number, since it is larger than the sum of its proper divisors (1).
20111222203 is an equidigital number, since it uses as much as digits as its factorization.
20111222203 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 96, while the sum is 16.
The spelling of 20111222203 in words is "twenty billion, one hundred eleven million, two hundred twenty-two thousand, two hundred three".