12011201233221 has 64 divisors (see below), whose sum is σ = 18247049625600. Its totient is φ = 6982018099200.

The previous prime is 12011201233169. The next prime is 12011201233249. The reversal of 12011201233221 is 12233210211021.

It is not a de Polignac number, because 12011201233221 - 2⁷ = 12011201233093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201233261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10369681 + ... + 11469641.

It is an arithmetic number, because the mean of its divisors is an integer number (285110150400).

Almost surely, 2^{12011201233221} is an apocalyptic number.

It is an amenable number.

12011201233221 is a deficient number, since it is larger than the sum of its proper divisors (6235848392379).

12011201233221 is a wasteful number, since it uses less digits than its factorization.

12011201233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100250.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12011201233221 its reverse (12233210211021), we get a palindrome (24244411444242).

The spelling of 12011201233221 in words is "twelve trillion, eleven billion, two hundred one million, two hundred thirty-three thousand, two hundred twenty-one".