1321112 has 16 divisors (see below), whose sum is σ = 2667840. Its totient is φ = 609696.

The previous prime is 1321109. The next prime is 1321139. The reversal of 1321112 is 2111231.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1321093 and 1321102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6248 + ... + 6455.

It is an arithmetic number, because the mean of its divisors is an integer number (166740).

2^1321112 is an apocalyptic number.

It is an amenable number.

1321112 is an abundant number, since it is smaller than the sum of its proper divisors (1346728).

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

1321112 is a wasteful number, since it uses less digits than its factorization.

1321112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722 (or 12718 counting only the distinct ones).

The product of its digits is 12, while the sum is 11.

The square root of 1321112 is about 1149.3963633142. The cubic root of 1321112 is about 109.7269259628.

Adding to 1321112 its reverse (2111231), we get a palindrome (3432343).

The spelling of 1321112 in words is "one million, three hundred twenty-one thousand, one hundred twelve".