20203120001 has 8 divisors (see below), whose sum is σ = 20353834920. Its totient is φ = 20052684288.

The previous prime is 20203119997. The next prime is 20203120009. The reversal of 20203120001 is 10002130202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 343546225 + 19859573776 = 18535^2 + 140924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20203120001 - 2² = 20203119997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203120009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76595 + ... + 215111.

It is an arithmetic number, because the mean of its divisors is an integer number (2544229365).

Almost surely, 2^20203120001 is an apocalyptic number.

It is an amenable number.

20203120001 is a deficient number, since it is larger than the sum of its proper divisors (150714919).

20203120001 is a wasteful number, since it uses less digits than its factorization.

20203120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139603.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20203120001 its reverse (10002130202), we get a palindrome (30205250203).

The spelling of 20203120001 in words is "twenty billion, two hundred three million, one hundred twenty thousand, one".