20211100103 has 2 divisors, whose sum is σ = 20211100104. Its totient is φ = 20211100102.

The previous prime is 20211100099. The next prime is 20211100159. The reversal of 20211100103 is 30100111202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211100103 - 2² = 20211100099 is a prime.

It is a super-2 number, since 2×20211100103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211100303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105550051 + 10105550052.

It is an arithmetic number, because the mean of its divisors is an integer number (10105550052).

Almost surely, 2^20211100103 is an apocalyptic number.

20211100103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211100103 is an equidigital number, since it uses as much as digits as its factorization.

20211100103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20211100103 its reverse (30100111202), we get a palindrome (50311211305).

The spelling of 20211100103 in words is "twenty billion, two hundred eleven million, one hundred thousand, one hundred three".