12011233021 has 8 divisors (see below), whose sum is σ = 13079383200. Its totient is φ = 10986680880.

The previous prime is 12011233009. The next prime is 12011233037. The reversal of 12011233021 is 12033211021.

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

It is a cyclic number.

It is not a de Polignac number, because 12011233021 - 2²⁵ = 11977678589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011232986 and 12011233004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011233051) 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, 10898935 + ... + 10900036.

It is an arithmetic number, because the mean of its divisors is an integer number (1634922900).

Almost surely, 2^12011233021 is an apocalyptic number.

It is an amenable number.

12011233021 is a deficient number, since it is larger than the sum of its proper divisors (1068150179).

12011233021 is a wasteful number, since it uses less digits than its factorization.

12011233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21799019.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12011233021 its reverse (12033211021), we get a palindrome (24044444042).

The spelling of 12011233021 in words is "twelve billion, eleven million, two hundred thirty-three thousand, twenty-one".