20032003221 has 16 divisors (see below), whose sum is σ = 28118980800. Its totient is φ = 12650041728.

The previous prime is 20032003171. The next prime is 20032003237. The reversal of 20032003221 is 12230023002.

It is not a de Polignac number, because 20032003221 - 2¹³ = 20031995029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20032003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032003021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483825 + ... + 523593.

It is an arithmetic number, because the mean of its divisors is an integer number (1757436300).

Almost surely, 2^20032003221 is an apocalyptic number.

It is an amenable number.

20032003221 is a deficient number, since it is larger than the sum of its proper divisors (8086977579).

20032003221 is a wasteful number, since it uses less digits than its factorization.

20032003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48628.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20032003221 its reverse (12230023002), we get a palindrome (32262026223).

The spelling of 20032003221 in words is "twenty billion, thirty-two million, three thousand, two hundred twenty-one".