20321011012301 has 4 divisors (see below), whose sum is σ = 20352713058204. Its totient is φ = 20289308966400.

The previous prime is 20321011012297. The next prime is 20321011012333. The reversal of 20321011012301 is 10321011012302.

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 7035496307401 + 13285514704900 = 2652451^2 + 3644930^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321011012301 - 2² = 20321011012297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20321011012301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321011012361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15851021990 + ... + 15851023271.

It is an arithmetic number, because the mean of its divisors is an integer number (5088178264551).

Almost surely, 2^{20321011012301} is an apocalyptic number.

It is an amenable number.

20321011012301 is a deficient number, since it is larger than the sum of its proper divisors (31702045903).

20321011012301 is an equidigital number, since it uses as much as digits as its factorization.

20321011012301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31702045902.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20321011012301 its reverse (10321011012302), we get a palindrome (30642022024603).

Subtracting from 20321011012301 its reverse (10321011012302), we obtain a palindrome (9999999999999).

The spelling of 20321011012301 in words is "twenty trillion, three hundred twenty-one billion, eleven million, twelve thousand, three hundred one".