21313000300033 has 4 divisors (see below), whose sum is σ = 22952461861588. Its totient is φ = 19673538738480.

The previous prime is 21313000300027. The next prime is 21313000300063. The reversal of 21313000300033 is 33000300031312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9965689295104 + 11347311004929 = 3156848^2 + 3368577^2 .

It is a cyclic number.

It is not a de Polignac number, because 21313000300033 - 2²⁵ = 21312966745601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313000300003) 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, 819730780758 + ... + 819730780783.

It is an arithmetic number, because the mean of its divisors is an integer number (5738115465397).

Almost surely, 2^{21313000300033} is an apocalyptic number.

It is an amenable number.

21313000300033 is a deficient number, since it is larger than the sum of its proper divisors (1639461561555).

21313000300033 is a wasteful number, since it uses less digits than its factorization.

21313000300033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639461561554.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 21313000300033 its reverse (33000300031312), we get a palindrome (54313300331345).

The spelling of 21313000300033 in words is "twenty-one trillion, three hundred thirteen billion, three hundred thousand, thirty-three".