2100521534103 has 12 divisors (see below), whose sum is σ = 3034129801248. Its totient is φ = 1400327778240.

The previous prime is 2100521534093. The next prime is 2100521534117. The reversal of 2100521534103 is 3014351250012.

2100521534103 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 5 + 21 + 534 + 103 = 666.

It is not a de Polignac number, because 2100521534103 - 2¹⁰ = 2100521533079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100521634103) 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 in 11 ways as a sum of consecutive naturals, for example, 976338 + ... + 2270303.

It is an arithmetic number, because the mean of its divisors is an integer number (252844150104).

Almost surely, 2^{2100521534103} is an apocalyptic number.

2100521534103 is a deficient number, since it is larger than the sum of its proper divisors (933608267145).

2100521534103 is a wasteful number, since it uses less digits than its factorization.

2100521534103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318534 (or 3318531 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 2100521534103 its reverse (3014351250012), we get a palindrome (5114872784115).

The spelling of 2100521534103 in words is "two trillion, one hundred billion, five hundred twenty-one million, five hundred thirty-four thousand, one hundred three".