2100216503 has 16 divisors (see below), whose sum is σ = 2732299776. Its totient is φ = 1565377440.

The previous prime is 2100216491. The next prime is 2100216527. The reversal of 2100216503 is 3056120012.

It is a de Polignac number, because none of the positive numbers 2^k-2100216503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100216203) 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 15 ways as a sum of consecutive naturals, for example, 591176 + ... + 594717.

It is an arithmetic number, because the mean of its divisors is an integer number (170768736).

Almost surely, 2^2100216503 is an apocalyptic number.

2100216503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2100216503 is a deficient number, since it is larger than the sum of its proper divisors (632083273).

2100216503 is a wasteful number, since it uses less digits than its factorization.

2100216503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185934.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2100216503 is about 45828.1191300712. The cubic root of 2100216503 is about 1280.6231712897.

Adding to 2100216503 its reverse (3056120012), we get a palindrome (5156336515).

The spelling of 2100216503 in words is "two billion, one hundred million, two hundred sixteen thousand, five hundred three".