2101331320103 has 2 divisors, whose sum is σ = 2101331320104. Its totient is φ = 2101331320102.

The previous prime is 2101331320091. The next prime is 2101331320117. The reversal of 2101331320103 is 3010231331012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101331320103 - 2¹⁰ = 2101331319079 is a prime.

It is a super-3 number, since 3×2101331320103³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101331320163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050665660051 + 1050665660052.

It is an arithmetic number, because the mean of its divisors is an integer number (1050665660052).

Almost surely, 2^{2101331320103} is an apocalyptic number.

2101331320103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101331320103 is an equidigital number, since it uses as much as digits as its factorization.

2101331320103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 2101331320103 its reverse (3010231331012), we get a palindrome (5111562651115).

The spelling of 2101331320103 in words is "two trillion, one hundred one billion, three hundred thirty-one million, three hundred twenty thousand, one hundred three".