20203312201 has 4 divisors (see below), whose sum is σ = 20207898900. Its totient is φ = 20198725504.

The previous prime is 20203312183. The next prime is 20203312223. The reversal of 20203312201 is 10221330202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10221330202 = 2 ⋅5110665101.

It can be written as a sum of positive squares in 2 ways, for example, as 469805625 + 19733506576 = 21675^2 + 140476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203312201 is a prime.

It is a super-3 number, since 3×20203312201³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203312271) 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, 2286736 + ... + 2295553.

It is an arithmetic number, because the mean of its divisors is an integer number (5051974725).

Almost surely, 2^20203312201 is an apocalyptic number.

It is an amenable number.

20203312201 is a deficient number, since it is larger than the sum of its proper divisors (4586699).

20203312201 is an equidigital number, since it uses as much as digits as its factorization.

20203312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586698.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20203312201 its reverse (10221330202), we get a palindrome (30424642403).

The spelling of 20203312201 in words is "twenty billion, two hundred three million, three hundred twelve thousand, two hundred one".