20320231221101 has 48 divisors (see below), whose sum is σ = 23914686571776. Its totient is φ = 17214668440704.

The previous prime is 20320231221097. The next prime is 20320231221139. The reversal of 20320231221101 is 10112213202302.

It is not a de Polignac number, because 20320231221101 - 2² = 20320231221097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322231221101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2383041500 + ... + 2383050026.

It is an arithmetic number, because the mean of its divisors is an integer number (498222636912).

Almost surely, 2^{20320231221101} is an apocalyptic number.

It is an amenable number.

20320231221101 is a deficient number, since it is larger than the sum of its proper divisors (3594455350675).

20320231221101 is a wasteful number, since it uses less digits than its factorization.

20320231221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338 (or 10331 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20320231221101 its reverse (10112213202302), we get a palindrome (30432444423403).

The spelling of 20320231221101 in words is "twenty trillion, three hundred twenty billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred one".