11233231021 has 16 divisors (see below), whose sum is σ = 11792734720. Its totient is φ = 10687023360.

The previous prime is 11233230989. The next prime is 11233231057. The reversal of 11233231021 is 12013233211.

It is a cyclic number.

It is not a de Polignac number, because 11233231021 - 2⁵ = 11233230989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11233231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233231081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700390 + ... + 716248.

It is an arithmetic number, because the mean of its divisors is an integer number (737045920).

Almost surely, 2^11233231021 is an apocalyptic number.

It is an amenable number.

11233231021 is a deficient number, since it is larger than the sum of its proper divisors (559503699).

11233231021 is a wasteful number, since it uses less digits than its factorization.

11233231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16276.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11233231021 its reverse (12013233211), we get a palindrome (23246464232).

The spelling of 11233231021 in words is "eleven billion, two hundred thirty-three million, two hundred thirty-one thousand, twenty-one".