21003321033133 has 8 divisors (see below), whose sum is σ = 21469979534400. Its totient is φ = 20540351532288.

The previous prime is 21003321033131. The next prime is 21003321033173. The reversal of 21003321033133 is 33133012330012.

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 21003321033133 - 2¹ = 21003321033131 is a prime.

It is a super-2 number, since 2×21003321033133² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21003321033098 and 21003321033107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003321033131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922238593 + ... + 922261366.

It is an arithmetic number, because the mean of its divisors is an integer number (2683747441800).

Almost surely, 2^{21003321033133} is an apocalyptic number.

It is an amenable number.

21003321033133 is a deficient number, since it is larger than the sum of its proper divisors (466658501267).

21003321033133 is a wasteful number, since it uses less digits than its factorization.

21003321033133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844500211.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 21003321033133 its reverse (33133012330012), we get a palindrome (54136333363145).

The spelling of 21003321033133 in words is "twenty-one trillion, three billion, three hundred twenty-one million, thirty-three thousand, one hundred thirty-three".