12311101021 has 8 divisors (see below), whose sum is σ = 13455777024. Its totient is φ = 11213146560.

The previous prime is 12311100943. The next prime is 12311101027. The reversal of 12311101021 is 12010111321.

It is a happy number.

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-12311101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311100992 and 12311101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311101027) 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, 11679835 + ... + 11680888.

It is an arithmetic number, because the mean of its divisors is an integer number (1681972128).

Almost surely, 2^12311101021 is an apocalyptic number.

It is an amenable number.

12311101021 is a deficient number, since it is larger than the sum of its proper divisors (1144676003).

12311101021 is a wasteful number, since it uses less digits than its factorization.

12311101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23360771.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12311101021 its reverse (12010111321), we get a palindrome (24321212342).

The spelling of 12311101021 in words is "twelve billion, three hundred eleven million, one hundred one thousand, twenty-one".