21331132130001 has 4 divisors (see below), whose sum is σ = 28441509506672. Its totient is φ = 14220754753332.

The previous prime is 21331132129987. The next prime is 21331132130023. The reversal of 21331132130001 is 10003123113312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21331132130001 - 2⁴³ = 12535039107793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21331132130001.

It is not an unprimeable number, because it can be changed into a prime (21331132137001) 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, 3555188688331 + ... + 3555188688336.

It is an arithmetic number, because the mean of its divisors is an integer number (7110377376668).

Almost surely, 2^{21331132130001} is an apocalyptic number.

It is an amenable number.

21331132130001 is a deficient number, since it is larger than the sum of its proper divisors (7110377376671).

21331132130001 is an equidigital number, since it uses as much as digits as its factorization.

21331132130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110377376670.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21331132130001 its reverse (10003123113312), we get a palindrome (31334255243313).

The spelling of 21331132130001 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred thirty-two million, one hundred thirty thousand, one".