20030221001 has 4 divisors (see below), whose sum is σ = 22891681152. Its totient is φ = 17168760852.

The previous prime is 20030220961. The next prime is 20030221031. The reversal of 20030221001 is 10012203002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20030221001 - 2²² = 20026026697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20030221031) 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, 1430730065 + ... + 1430730078.

It is an arithmetic number, because the mean of its divisors is an integer number (5722920288).

Almost surely, 2^20030221001 is an apocalyptic number.

It is an amenable number.

20030221001 is a deficient number, since it is larger than the sum of its proper divisors (2861460151).

20030221001 is an equidigital number, since it uses as much as digits as its factorization.

20030221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861460150.

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

Adding to 20030221001 its reverse (10012203002), we get a palindrome (30042424003).

The spelling of 20030221001 in words is "twenty billion, thirty million, two hundred twenty-one thousand, one".