20213324320001 has 4 divisors (see below), whose sum is σ = 20291975387652. Its totient is φ = 20134673252352.

The previous prime is 20213324319959. The next prime is 20213324320009. The reversal of 20213324320001 is 10002342331202.

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 18630005430001 + 1583318890000 = 4316249^2 + 1258300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213324320001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20213324320009) 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, 39325533440 + ... + 39325533953.

It is an arithmetic number, because the mean of its divisors is an integer number (5072993846913).

Almost surely, 2^{20213324320001} is an apocalyptic number.

It is an amenable number.

20213324320001 is a deficient number, since it is larger than the sum of its proper divisors (78651067651).

20213324320001 is an equidigital number, since it uses as much as digits as its factorization.

20213324320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78651067650.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20213324320001 its reverse (10002342331202), we get a palindrome (30215666651203).

The spelling of 20213324320001 in words is "twenty trillion, two hundred thirteen billion, three hundred twenty-four million, three hundred twenty thousand, one".