213210320033 has 4 divisors (see below), whose sum is σ = 213211425840. Its totient is φ = 213209214228.

The previous prime is 213210320009. The next prime is 213210320039. The reversal of 213210320033 is 330023012312.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213210320033 is a prime.

It is a super-2 number, since 2×213210320033² (a number of 23 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 = 213210319987 and 213210320014.

It is not an unprimeable number, because it can be changed into a prime (213210320039) 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, 179735 + ... + 677292.

It is an arithmetic number, because the mean of its divisors is an integer number (53302856460).

Almost surely, 2^213210320033 is an apocalyptic number.

It is an amenable number.

213210320033 is a deficient number, since it is larger than the sum of its proper divisors (1105807).

213210320033 is an equidigital number, since it uses as much as digits as its factorization.

213210320033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105806.

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

Adding to 213210320033 its reverse (330023012312), we get a palindrome (543233332345).

The spelling of 213210320033 in words is "two hundred thirteen billion, two hundred ten million, three hundred twenty thousand, thirty-three".