112223444521 has 18 divisors (see below), whose sum is σ = 118994112510. Its totient is φ = 105832351296.

The previous prime is 112223444449. The next prime is 112223444603. The reversal of 112223444521 is 125444322211.

It can be written as a sum of positive squares in 3 ways, for example, as 2453815296 + 109769629225 = 49536^2 + 331315^2 .

It is not a de Polignac number, because 112223444521 - 2⁹ = 112223444009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112223444321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1518925 + ... + 1591093.

Almost surely, 2^112223444521 is an apocalyptic number.

It is an amenable number.

112223444521 is a deficient number, since it is larger than the sum of its proper divisors (6770667989).

112223444521 is an frugal number, since it uses more digits than its factorization.

112223444521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72313 (or 72241 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

Adding to 112223444521 its reverse (125444322211), we get a palindrome (237667766732).

The spelling of 112223444521 in words is "one hundred twelve billion, two hundred twenty-three million, four hundred forty-four thousand, five hundred twenty-one".