11112032221 has 8 divisors (see below), whose sum is σ = 11225763000. Its totient is φ = 10998374400.

The previous prime is 11112032203. The next prime is 11112032227. The reversal of 11112032221 is 12223021111.

It can be written as a sum of positive squares in 4 ways, for example, as 761208100 + 10350824121 = 27590^2 + 101739^2 .

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 11112032221 - 2¹⁷ = 11111901149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112032195 and 11112032204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112032227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319705 + ... + 352753.

It is an arithmetic number, because the mean of its divisors is an integer number (1403220375).

Almost surely, 2^11112032221 is an apocalyptic number.

It is an amenable number.

11112032221 is a deficient number, since it is larger than the sum of its proper divisors (113730779).

11112032221 is a wasteful number, since it uses less digits than its factorization.

11112032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36479.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11112032221 its reverse (12223021111), we get a palindrome (23335053332).

It can be divided in two parts, 111120 and 32221, that added together give a palindrome (143341).

The spelling of 11112032221 in words is "eleven billion, one hundred twelve million, thirty-two thousand, two hundred twenty-one".