11232112031221 has 8 divisors (see below), whose sum is σ = 11611626226200. Its totient is φ = 10857624514560.

The previous prime is 11232112031219. The next prime is 11232112031311. The reversal of 11232112031221 is 12213021123211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 180569754225 + 11051542276996 = 424935^2 + 3324386^2 .

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 11232112031221 - 2¹ = 11232112031219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11232112031192 and 11232112031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11232112031201) 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 7 ways as a sum of consecutive naturals, for example, 1256665036 + ... + 1256673973.

It is an arithmetic number, because the mean of its divisors is an integer number (1451453278275).

Almost surely, 2^{11232112031221} is an apocalyptic number.

It is an amenable number.

11232112031221 is a deficient number, since it is larger than the sum of its proper divisors (379514194979).

11232112031221 is a wasteful number, since it uses less digits than its factorization.

11232112031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513339159.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11232112031221 its reverse (12213021123211), we get a palindrome (23445133154432).

The spelling of 11232112031221 in words is "eleven trillion, two hundred thirty-two billion, one hundred twelve million, thirty-one thousand, two hundred twenty-one".