20401321301 has 4 divisors (see below), whose sum is σ = 20404505004. Its totient is φ = 20398137600.

The previous prime is 20401321289. The next prime is 20401321321. The reversal of 20401321301 is 10312310402.

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 3223287076 + 17178034225 = 56774^2 + 131065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401321301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20401321301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401321321) 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, 1582220 + ... + 1595061.

It is an arithmetic number, because the mean of its divisors is an integer number (5101126251).

Almost surely, 2^20401321301 is an apocalyptic number.

It is an amenable number.

20401321301 is a deficient number, since it is larger than the sum of its proper divisors (3183703).

20401321301 is an equidigital number, since it uses as much as digits as its factorization.

20401321301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183702.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20401321301 its reverse (10312310402), we get a palindrome (30713631703).

The spelling of 20401321301 in words is "twenty billion, four hundred one million, three hundred twenty-one thousand, three hundred one".