221131112111332 has 12 divisors (see below), whose sum is σ = 387002294482860. Its totient is φ = 110559027973376.

The previous prime is 221131112111323. The next prime is 221131112111401. The reversal of 221131112111332 is 233111211131122.

It can be written as a sum of positive squares in 2 ways, for example, as 103394202870436 + 117736909240896 = 10168294^2 + 10850664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221131112111297 and 221131112111306.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1631944357 + ... + 1632079852.

It is an arithmetic number, because the mean of its divisors is an integer number (32250191206905).

Almost surely, 2^{221131112111332} is an apocalyptic number.

It is an amenable number.

221131112111332 is a deficient number, since it is larger than the sum of its proper divisors (165871182371528).

221131112111332 is a wasteful number, since it uses less digits than its factorization.

221131112111332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264041150 (or 3264041148 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

Adding to 221131112111332 its reverse (233111211131122), we get a palindrome (454242323242454).

The spelling of 221131112111332 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred twelve million, one hundred eleven thousand, three hundred thirty-two".