20103220001 has 4 divisors (see below), whose sum is σ = 21285762372. Its totient is φ = 18920677632.

The previous prime is 20103219931. The next prime is 20103220003. The reversal of 20103220001 is 10002230102.

It is a happy number.

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 17863659025 + 2239560976 = 133655^2 + 47324^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103220001 - 2³⁴ = 2923350817 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 (20103220003) 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, 591271160 + ... + 591271193.

It is an arithmetic number, because the mean of its divisors is an integer number (5321440593).

Almost surely, 2^20103220001 is an apocalyptic number.

It is an amenable number.

20103220001 is a deficient number, since it is larger than the sum of its proper divisors (1182542371).

20103220001 is a wasteful number, since it uses less digits than its factorization.

20103220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182542370.

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

Adding to 20103220001 its reverse (10002230102), we get a palindrome (30105450103).

The spelling of 20103220001 in words is "twenty billion, one hundred three million, two hundred twenty thousand, one".