12011023133221 has 32 divisors (see below), whose sum is σ = 14153980393728. Its totient is φ = 9981296102400.

The previous prime is 12011023133201. The next prime is 12011023133251. The reversal of 12011023133221 is 12233132011021.

It is not a de Polignac number, because 12011023133221 - 2⁴³ = 3214930111013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011023133192 and 12011023133201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011023133201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5725275 + ... + 7536631.

It is an arithmetic number, because the mean of its divisors is an integer number (442311887304).

Almost surely, 2^{12011023133221} is an apocalyptic number.

It is an amenable number.

12011023133221 is a deficient number, since it is larger than the sum of its proper divisors (2142957260507).

12011023133221 is a wasteful number, since it uses less digits than its factorization.

12011023133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811661.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12011023133221 its reverse (12233132011021), we get a palindrome (24244155144242).

The spelling of 12011023133221 in words is "twelve trillion, eleven billion, twenty-three million, one hundred thirty-three thousand, two hundred twenty-one".