21013231211101 has 8 divisors (see below), whose sum is σ = 21630664972224. Its totient is φ = 20401649903040.

The previous prime is 21013231211087. The next prime is 21013231211183. The reversal of 21013231211101 is 10111213231012.

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-21013231211101 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 (21013231211191) 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, 1463105980 + ... + 1463120341.

It is an arithmetic number, because the mean of its divisors is an integer number (2703833121528).

Almost surely, 2^{21013231211101} is an apocalyptic number.

It is an amenable number.

21013231211101 is a deficient number, since it is larger than the sum of its proper divisors (617433761123).

21013231211101 is a wasteful number, since it uses less digits than its factorization.

21013231211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926226531.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21013231211101 its reverse (10111213231012), we get a palindrome (31124444442113).

The spelling of 21013231211101 in words is "twenty-one trillion, thirteen billion, two hundred thirty-one million, two hundred eleven thousand, one hundred one".