20211022111103 has 2 divisors, whose sum is σ = 20211022111104. Its totient is φ = 20211022111102.

The previous prime is 20211022111099. The next prime is 20211022111109. The reversal of 20211022111103 is 30111122011202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211022111103 - 2² = 20211022111099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211022111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105511055551 + 10105511055552.

It is an arithmetic number, because the mean of its divisors is an integer number (10105511055552).

Almost surely, 2^{20211022111103} is an apocalyptic number.

20211022111103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211022111103 is an equidigital number, since it uses as much as digits as its factorization.

20211022111103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20211022111103 its reverse (30111122011202), we get a palindrome (50322144122305).

Subtracting 20211022111103 from its reverse (30111122011202), we obtain a palindrome (9900099900099).

The spelling of 20211022111103 in words is "twenty trillion, two hundred eleven billion, twenty-two million, one hundred eleven thousand, one hundred three".