1112521221 has 12 divisors (see below), whose sum is σ = 1836543072. Its totient is φ = 635726376.

The previous prime is 1112521187. The next prime is 1112521243. The reversal of 1112521221 is 1221252111.

It is not a de Polignac number, because 1112521221 - 2⁹ = 1112520709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1112521194 and 1112521203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112521261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8829471 + ... + 8829596.

It is an arithmetic number, because the mean of its divisors is an integer number (153045256).

Almost surely, 2^1112521221 is an apocalyptic number.

It is an amenable number.

1112521221 is a deficient number, since it is larger than the sum of its proper divisors (724021851).

1112521221 is a wasteful number, since it uses less digits than its factorization.

1112521221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17659080 (or 17659077 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 1112521221 is about 33354.4782750383. The cubic root of 1112521221 is about 1036.1821373567.

Adding to 1112521221 its reverse (1221252111), we get a palindrome (2333773332).

The spelling of 1112521221 in words is "one billion, one hundred twelve million, five hundred twenty-one thousand, two hundred twenty-one".