20812002103 has 2 divisors, whose sum is σ = 20812002104. Its totient is φ = 20812002102.

The previous prime is 20812002067. The next prime is 20812002109. The reversal of 20812002103 is 30120021802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20812002103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20812002109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10406001051 + 10406001052.

It is an arithmetic number, because the mean of its divisors is an integer number (10406001052).

Almost surely, 2^20812002103 is an apocalyptic number.

20812002103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20812002103 is an equidigital number, since it uses as much as digits as its factorization.

20812002103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20812002103 its reverse (30120021802), we get a palindrome (50932023905).

The spelling of 20812002103 in words is "twenty billion, eight hundred twelve million, two thousand, one hundred three".