1121220112 has 40 divisors (see below), whose sum is σ = 2229357312. Its totient is φ = 545952000.

The previous prime is 1121220103. The next prime is 1121220157. The reversal of 1121220112 is 2110221211.

It is a junction number, because it is equal to n+sod(n) for n = 1121220092 and 1121220101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475737 + ... + 478087.

Almost surely, 2^1121220112 is an apocalyptic number.

It is an amenable number.

1121220112 is a deficient number, since it is larger than the sum of its proper divisors (1108137200).

1121220112 is a wasteful number, since it uses less digits than its factorization.

1121220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1121220112 is about 33484.6250090993. The cubic root of 1121220112 is about 1038.8757921072.

Adding to 1121220112 its reverse (2110221211), we get a palindrome (3231441323).

The spelling of 1121220112 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twelve".