11231113223021 has 4 divisors (see below), whose sum is σ = 11233359900000. Its totient is φ = 11228866546044.

The previous prime is 11231113223009. The next prime is 11231113223063. The reversal of 11231113223021 is 12032231113211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11231113223021 - 2²² = 11231109028717 is a prime.

It is a super-2 number, since 2×11231113223021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231113223081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123330991 + ... + 1123340988.

It is an arithmetic number, because the mean of its divisors is an integer number (2808339975000).

Almost surely, 2^{11231113223021} is an apocalyptic number.

It is an amenable number.

11231113223021 is a deficient number, since it is larger than the sum of its proper divisors (2246676979).

11231113223021 is an equidigital number, since it uses as much as digits as its factorization.

11231113223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246676978.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11231113223021 its reverse (12032231113211), we get a palindrome (23263344336232).

The spelling of 11231113223021 in words is "eleven trillion, two hundred thirty-one billion, one hundred thirteen million, two hundred twenty-three thousand, twenty-one".