21100240214003 has 4 divisors (see below), whose sum is σ = 21549181495200. Its totient is φ = 20651298932808.

The previous prime is 21100240213993. The next prime is 21100240214023. The reversal of 21100240214003 is 30041204200112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21100240214003 - 2²⁰ = 21100239165427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100240214023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224470640528 + ... + 224470640621.

It is an arithmetic number, because the mean of its divisors is an integer number (5387295373800).

Almost surely, 2^{21100240214003} is an apocalyptic number.

21100240214003 is a deficient number, since it is larger than the sum of its proper divisors (448941281197).

21100240214003 is an equidigital number, since it uses as much as digits as its factorization.

21100240214003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448941281196.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21100240214003 its reverse (30041204200112), we get a palindrome (51141444414115).

The spelling of 21100240214003 in words is "twenty-one trillion, one hundred billion, two hundred forty million, two hundred fourteen thousand, three".