13313230120021 has 4 divisors (see below), whose sum is σ = 14337324744652. Its totient is φ = 12289135495392.

The previous prime is 13313230120019. The next prime is 13313230120063. The reversal of 13313230120021 is 12002103231331.

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 8565929951121 + 4747300168900 = 2926761^2 + 2178830^2 .

It is a cyclic number.

It is not a de Polignac number, because 13313230120021 - 2¹ = 13313230120019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13313230119974 and 13313230120001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313230120921) 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, 512047312296 + ... + 512047312321.

It is an arithmetic number, because the mean of its divisors is an integer number (3584331186163).

Almost surely, 2^{13313230120021} is an apocalyptic number.

It is an amenable number.

13313230120021 is a deficient number, since it is larger than the sum of its proper divisors (1024094624631).

13313230120021 is a wasteful number, since it uses less digits than its factorization.

13313230120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024094624630.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13313230120021 its reverse (12002103231331), we get a palindrome (25315333351352).

The spelling of 13313230120021 in words is "thirteen trillion, three hundred thirteen billion, two hundred thirty million, one hundred twenty thousand, twenty-one".