20331322003213 has 4 divisors (see below), whose sum is σ = 21895269849628. Its totient is φ = 18767374156800.

The previous prime is 20331322003207. The next prime is 20331322003247. The reversal of 20331322003213 is 31230022313302.

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 3072174628644 + 17259147374569 = 1752762^2 + 4154413^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331322003213 - 2⁹ = 20331322002701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331322003253) 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, 781973923188 + ... + 781973923213.

It is an arithmetic number, because the mean of its divisors is an integer number (5473817462407).

Almost surely, 2^{20331322003213} is an apocalyptic number.

It is an amenable number.

20331322003213 is a deficient number, since it is larger than the sum of its proper divisors (1563947846415).

20331322003213 is a wasteful number, since it uses less digits than its factorization.

20331322003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563947846414.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20331322003213 its reverse (31230022313302), we get a palindrome (51561344316515).

The spelling of 20331322003213 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-two million, three thousand, two hundred thirteen".