12011230221 has 8 divisors (see below), whose sum is σ = 16121033664. Its totient is φ = 7954456800.

The previous prime is 12011230169. The next prime is 12011230241. The reversal of 12011230221 is 12203211021.

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

It is not a de Polignac number, because 12011230221 - 2⁷ = 12011230093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011230221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011230241) 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, 13256976 + ... + 13257881.

It is an arithmetic number, because the mean of its divisors is an integer number (2015129208).

Almost surely, 2^12011230221 is an apocalyptic number.

It is an amenable number.

12011230221 is a deficient number, since it is larger than the sum of its proper divisors (4109803443).

12011230221 is a wasteful number, since it uses less digits than its factorization.

12011230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26515011.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12011230221 its reverse (12203211021), we get a palindrome (24214441242).

The spelling of 12011230221 in words is "twelve billion, eleven million, two hundred thirty thousand, two hundred twenty-one".