20021103103 has 2 divisors, whose sum is σ = 20021103104. Its totient is φ = 20021103102.

The previous prime is 20021103083. The next prime is 20021103119. The reversal of 20021103103 is 30130112002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021103103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021103173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010551551 + 10010551552.

It is an arithmetic number, because the mean of its divisors is an integer number (10010551552).

Almost surely, 2^20021103103 is an apocalyptic number.

20021103103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021103103 is an equidigital number, since it uses as much as digits as its factorization.

20021103103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20021103103 its reverse (30130112002), we get a palindrome (50151215105).

The spelling of 20021103103 in words is "twenty billion, twenty-one million, one hundred three thousand, one hundred three".