112233121221 has 24 divisors (see below), whose sum is σ = 162072705600. Its totient is φ = 69052903296.

The previous prime is 112233121207. The next prime is 112233121249. The reversal of 112233121221 is 122121332211.

It is not a de Polignac number, because 112233121221 - 2²¹ = 112231024069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112233121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2946520 + ... + 2984366.

It is an arithmetic number, because the mean of its divisors is an integer number (6753029400).

Almost surely, 2^112233121221 is an apocalyptic number.

It is an amenable number.

112233121221 is a deficient number, since it is larger than the sum of its proper divisors (49839584379).

112233121221 is a wasteful number, since it uses less digits than its factorization.

112233121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43725 (or 43712 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 112233121221 its reverse (122121332211), we get a palindrome (234354453432).

The spelling of 112233121221 in words is "one hundred twelve billion, two hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-one".