2101000215503 has 8 divisors (see below), whose sum is σ = 2401223304480. Its totient is φ = 1800797176800.

The previous prime is 2101000215481. The next prime is 2101000215521. The reversal of 2101000215503 is 3055120001012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101000215503 - 2⁸ = 2101000215247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101000215563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4787348 + ... + 5207753.

It is an arithmetic number, because the mean of its divisors is an integer number (300152913060).

Almost surely, 2^{2101000215503} is an apocalyptic number.

2101000215503 is a deficient number, since it is larger than the sum of its proper divisors (300223088977).

2101000215503 is an equidigital number, since it uses as much as digits as its factorization.

2101000215503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025137.

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 2101000215503 its reverse (3055120001012), we get a palindrome (5156120216515).

The spelling of 2101000215503 in words is "two trillion, one hundred one billion, two hundred fifteen thousand, five hundred three".