2101133123103 has 16 divisors (see below), whose sum is σ = 3201877780736. Its totient is φ = 1200590830080.

The previous prime is 2101133123039. The next prime is 2101133123137. The reversal of 2101133123103 is 3013213311012.

It is a happy number.

It is not a de Polignac number, because 2101133123103 - 2⁶ = 2101133123039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101133123103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101133123153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1903618 + ... + 2797503.

It is an arithmetic number, because the mean of its divisors is an integer number (200117361296).

Almost surely, 2^{2101133123103} is an apocalyptic number.

2101133123103 is a deficient number, since it is larger than the sum of its proper divisors (1100744657633).

2101133123103 is a wasteful number, since it uses less digits than its factorization.

2101133123103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722414.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 2101133123103 its reverse (3013213311012), we get a palindrome (5114346434115).

The spelling of 2101133123103 in words is "two trillion, one hundred one billion, one hundred thirty-three million, one hundred twenty-three thousand, one hundred three".