7121112 has 16 divisors (see below), whose sum is σ = 17802840. Its totient is φ = 2373696.

The previous prime is 7121089. The next prime is 7121137. The reversal of 7121112 is 2111217.

It is a super-3 number, since 3×7121112³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 7121091 and 7121100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148333 + ... + 148380.

Almost surely, 2^7121112 is an apocalyptic number.

It is an amenable number.

7121112 is an abundant number, since it is smaller than the sum of its proper divisors (10681728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7121112 is a wasteful number, since it uses less digits than its factorization.

7121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296722 (or 296718 counting only the distinct ones).

The product of its digits is 28, while the sum is 15.

The square root of 7121112 is about 2668.5411744997. The cubic root of 7121112 is about 192.3900490904.

Adding to 7121112 its reverse (2111217), we get a palindrome (9232329).

The spelling of 7121112 in words is "seven million, one hundred twenty-one thousand, one hundred twelve".