21202331033 has 8 divisors (see below), whose sum is σ = 22834415688. Its totient is φ = 19570408704.

The previous prime is 21202330949. The next prime is 21202331119. The reversal of 21202331033 is 33013320212.

It can be written as a sum of positive squares in 4 ways, for example, as 1120040089 + 20082290944 = 33467^2 + 141712^2 .

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 21202331033 - 2⁸ = 21202330777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202330996 and 21202331014.

It is not an unprimeable number, because it can be changed into a prime (21202331533) 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, 454241 + ... + 498737.

It is an arithmetic number, because the mean of its divisors is an integer number (2854301961).

Almost surely, 2^21202331033 is an apocalyptic number.

It is an amenable number.

21202331033 is a deficient number, since it is larger than the sum of its proper divisors (1632084655).

21202331033 is a wasteful number, since it uses less digits than its factorization.

21202331033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81163.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21202331033 its reverse (33013320212), we get a palindrome (54215651245).

The spelling of 21202331033 in words is "twenty-one billion, two hundred two million, three hundred thirty-one thousand, thirty-three".