12011230210021 has 16 divisors (see below), whose sum is σ = 13883370561280. Its totient is φ = 10178565805440.

The previous prime is 12011230210013. The next prime is 12011230210037. The reversal of 12011230210021 is 12001203211021.

It is a cyclic number.

It is not a de Polignac number, because 12011230210021 - 2³ = 12011230210013 is a prime.

It is a super-2 number, since 2×12011230210021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011230209977 and 12011230210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011230270021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16874625 + ... + 17572006.

It is an arithmetic number, because the mean of its divisors is an integer number (867710660080).

Almost surely, 2^{12011230210021} is an apocalyptic number.

It is an amenable number.

12011230210021 is a deficient number, since it is larger than the sum of its proper divisors (1872140351259).

12011230210021 is a wasteful number, since it uses less digits than its factorization.

12011230210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34447204.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12011230210021 its reverse (12001203211021), we get a palindrome (24012433421042).

It can be divided in two parts, 12011 and 230210021, that added together give a palindrome (230222032).

The spelling of 12011230210021 in words is "twelve trillion, eleven billion, two hundred thirty million, two hundred ten thousand, twenty-one".