20003221032006 has 64 divisors (see below), whose sum is σ = 40345345797120. Its totient is φ = 6611482725120.

The previous prime is 20003221031977. The next prime is 20003221032017. The reversal of 20003221032006 is 60023012230002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2429635266 + ... + 2429643498.

It is an arithmetic number, because the mean of its divisors is an integer number (630396028080).

Almost surely, 2^{20003221032006} is an apocalyptic number.

20003221032006 is an abundant number, since it is smaller than the sum of its proper divisors (20342124765114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20003221032006 is a wasteful number, since it uses less digits than its factorization.

20003221032006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14701.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20003221032006 its reverse (60023012230002), we get a palindrome (80026233262008).

The spelling of 20003221032006 in words is "twenty trillion, three billion, two hundred twenty-one million, thirty-two thousand, six".