20013203221 has 8 divisors (see below), whose sum is σ = 22032885600. Its totient is φ = 18026904240.

The previous prime is 20013203183. The next prime is 20013203261. The reversal of 20013203221 is 12230231002.

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 20013203221 - 2¹³ = 20013195029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20013203195 and 20013203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013203261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8344591 + ... + 8346988.

It is an arithmetic number, because the mean of its divisors is an integer number (2754110700).

Almost surely, 2^20013203221 is an apocalyptic number.

It is an amenable number.

20013203221 is a deficient number, since it is larger than the sum of its proper divisors (2019682379).

20013203221 is a wasteful number, since it uses less digits than its factorization.

20013203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691699.

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

Adding to 20013203221 its reverse (12230231002), we get a palindrome (32243434223).

The spelling of 20013203221 in words is "twenty billion, thirteen million, two hundred three thousand, two hundred twenty-one".