21312432001033 has 8 divisors (see below), whose sum is σ = 22566209741352. Its totient is φ = 20058665957376.

The previous prime is 21312432001013. The next prime is 21312432001057. The reversal of 21312432001033 is 33010023421312.

It can be written as a sum of positive squares in 4 ways, for example, as 4590769041664 + 16721662959369 = 2142608^2 + 4089213^2 .

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 21312432001033 - 2⁵ = 21312432001001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21312432000989 and 21312432001007.

It is not an unprimeable number, because it can be changed into a prime (21312432001013) 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 7 ways as a sum of consecutive naturals, for example, 975841 + ... + 6601297.

It is an arithmetic number, because the mean of its divisors is an integer number (2820776217669).

Almost surely, 2^{21312432001033} is an apocalyptic number.

It is an amenable number.

21312432001033 is a deficient number, since it is larger than the sum of its proper divisors (1253777740319).

21312432001033 is a wasteful number, since it uses less digits than its factorization.

21312432001033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848331.

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

Adding to 21312432001033 its reverse (33010023421312), we get a palindrome (54322455422345).

The spelling of 21312432001033 in words is "twenty-one trillion, three hundred twelve billion, four hundred thirty-two million, one thousand, thirty-three".