20032012221 has 16 divisors (see below), whose sum is σ = 29087110080. Its totient is φ = 12188880000.

The previous prime is 20032012201. The next prime is 20032012267. The reversal of 20032012221 is 12221023002.

It is a happy number.

It is not a de Polignac number, because 20032012221 - 2⁶ = 20032012157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20032012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032012201) 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 15 ways as a sum of consecutive naturals, for example, 2882155 + ... + 2889096.

It is an arithmetic number, because the mean of its divisors is an integer number (1817944380).

Almost surely, 2^20032012221 is an apocalyptic number.

It is an amenable number.

20032012221 is a deficient number, since it is larger than the sum of its proper divisors (9055097859).

20032012221 is a wasteful number, since it uses less digits than its factorization.

20032012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771356.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20032012221 its reverse (12221023002), we get a palindrome (32253035223).

The spelling of 20032012221 in words is "twenty billion, thirty-two million, twelve thousand, two hundred twenty-one".