21011132131003 has 4 divisors (see below), whose sum is σ = 24012722435440. Its totient is φ = 18009541826568.

The previous prime is 21011132130997. The next prime is 21011132131027. The reversal of 21011132131003 is 30013123111012.

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 21011132131003 - 2¹⁷ = 21011131999931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21011133131003) 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 3 ways as a sum of consecutive naturals, for example, 1500795152208 + ... + 1500795152221.

It is an arithmetic number, because the mean of its divisors is an integer number (6003180608860).

Almost surely, 2^{21011132131003} is an apocalyptic number.

21011132131003 is a deficient number, since it is larger than the sum of its proper divisors (3001590304437).

21011132131003 is an equidigital number, since it uses as much as digits as its factorization.

21011132131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001590304436.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 21011132131003 its reverse (30013123111012), we get a palindrome (51024255242015).

The spelling of 21011132131003 in words is "twenty-one trillion, eleven billion, one hundred thirty-two million, one hundred thirty-one thousand, three".