20013032331221 has 8 divisors (see below), whose sum is σ = 20101346609760. Its totient is φ = 19924719378928.

The previous prime is 20013032331163. The next prime is 20013032331301. The reversal of 20013032331221 is 12213323031002.

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 20013032331221 - 2³⁸ = 19738154424277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013032331821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41564270 + ... + 42043008.

It is an arithmetic number, because the mean of its divisors is an integer number (2512668326220).

Almost surely, 2^{20013032331221} is an apocalyptic number.

It is an amenable number.

20013032331221 is a deficient number, since it is larger than the sum of its proper divisors (88314278539).

20013032331221 is a wasteful number, since it uses less digits than its factorization.

20013032331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663123.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20013032331221 its reverse (12213323031002), we get a palindrome (32226355362223).

The spelling of 20013032331221 in words is "twenty trillion, thirteen billion, thirty-two million, three hundred thirty-one thousand, two hundred twenty-one".