20031232220321 has 8 divisors (see below), whose sum is σ = 22922919400704. Its totient is φ = 17147065684320.

The previous prime is 20031232220303. The next prime is 20031232220347. The reversal of 20031232220321 is 12302223213002.

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 20031232220321 - 2⁴² = 15633185709217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031232228321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880155385 + ... + 1880166038.

It is an arithmetic number, because the mean of its divisors is an integer number (2865364925088).

Almost surely, 2^{20031232220321} is an apocalyptic number.

It is an amenable number.

20031232220321 is a deficient number, since it is larger than the sum of its proper divisors (2891687180383).

20031232220321 is an equidigital number, since it uses as much as digits as its factorization.

20031232220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760322191.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20031232220321 its reverse (12302223213002), we get a palindrome (32333455433323).

The spelling of 20031232220321 in words is "twenty trillion, thirty-one billion, two hundred thirty-two million, two hundred twenty thousand, three hundred twenty-one".