21040134133003 has 4 divisors (see below), whose sum is σ = 21040159945320. Its totient is φ = 21040108320688.

The previous prime is 21040134132991. The next prime is 21040134133027. The reversal of 21040134133003 is 30033143104012.

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 21040134133003 - 2³³ = 21031544198411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21440134133003) 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, 11642218 + ... + 13327471.

It is an arithmetic number, because the mean of its divisors is an integer number (5260039986330).

Almost surely, 2^{21040134133003} is an apocalyptic number.

21040134133003 is a deficient number, since it is larger than the sum of its proper divisors (25812317).

21040134133003 is an equidigital number, since it uses as much as digits as its factorization.

21040134133003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25812316.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21040134133003 its reverse (30033143104012), we get a palindrome (51073277237015).

The spelling of 21040134133003 in words is "twenty-one trillion, forty billion, one hundred thirty-four million, one hundred thirty-three thousand, three".