11321112023221 has 32 divisors (see below), whose sum is σ = 15204806523648. Its totient is φ = 8140683133440.

The previous prime is 11321112023191. The next prime is 11321112023239. The reversal of 11321112023221 is 12232021112311.

It is a happy number.

It is not a de Polignac number, because 11321112023221 - 2¹⁵ = 11321111990453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11321112023192 and 11321112023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321112023261) 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 31 ways as a sum of consecutive naturals, for example, 1789215 + ... + 5083651.

It is an arithmetic number, because the mean of its divisors is an integer number (475150203864).

Almost surely, 2^{11321112023221} is an apocalyptic number.

11321112023221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11321112023221 is a deficient number, since it is larger than the sum of its proper divisors (3883694500427).

11321112023221 is a wasteful number, since it uses less digits than its factorization.

11321112023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297901.

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

Adding to 11321112023221 its reverse (12232021112311), we get a palindrome (23553133135532).

The spelling of 11321112023221 in words is "eleven trillion, three hundred twenty-one billion, one hundred twelve million, twenty-three thousand, two hundred twenty-one".