21231320001101 has 8 divisors (see below), whose sum is σ = 24722183937024. Its totient is φ = 17854910620560.

The previous prime is 21231320001091. The next prime is 21231320001137. The reversal of 21231320001101 is 10110002313212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21231320001101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21231320001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231320000101) 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, 28613638445 + ... + 28613639186.

It is an arithmetic number, because the mean of its divisors is an integer number (3090272992128).

Almost surely, 2^{21231320001101} is an apocalyptic number.

It is an amenable number.

21231320001101 is a deficient number, since it is larger than the sum of its proper divisors (3490863935923).

21231320001101 is an equidigital number, since it uses as much as digits as its factorization.

21231320001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57227277691.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21231320001101 its reverse (10110002313212), we get a palindrome (31341322314313).

The spelling of 21231320001101 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred twenty million, one thousand, one hundred one".