21202323133133 has 4 divisors (see below), whose sum is σ = 21204840335328. Its totient is φ = 21199805930940.

The previous prime is 21202323133109. The next prime is 21202323133141. The reversal of 21202323133133 is 33133132320212.

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 a cyclic number.

It is not a de Polignac number, because 21202323133133 - 2⁸ = 21202323132877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202323133096 and 21202323133105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202323133193) 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, 1258588463 + ... + 1258605308.

It is an arithmetic number, because the mean of its divisors is an integer number (5301210083832).

Almost surely, 2^{21202323133133} is an apocalyptic number.

It is an amenable number.

21202323133133 is a deficient number, since it is larger than the sum of its proper divisors (2517202195).

21202323133133 is an equidigital number, since it uses as much as digits as its factorization.

21202323133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517202194.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21202323133133 its reverse (33133132320212), we get a palindrome (54335455453345).

The spelling of 21202323133133 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-three million, one hundred thirty-three thousand, one hundred thirty-three".