1215112 has 16 divisors (see below), whose sum is σ = 2313360. Its totient is φ = 598224.

The previous prime is 1215103. The next prime is 1215121. The reversal of 1215112 is 2115121.

It is an interprime number because it is at equal distance from previous prime (1215103) and next prime (1215121).

It is a junction number, because it is equal to n+sod(n) for n = 1215092 and 1215101.

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, 598 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (144585).

2^1215112 is an apocalyptic number.

It is an amenable number.

1215112 is a deficient number, since it is larger than the sum of its proper divisors (1098248).

1215112 is a wasteful number, since it uses less digits than its factorization.

1215112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340 (or 2336 counting only the distinct ones).

The product of its digits is 20, while the sum is 13.

The square root of 1215112 is about 1102.3211873134. The cubic root of 1215112 is about 106.7100778163.

Subtracting 1215112 from its reverse (2115121), we obtain a palindrome (900009).

The spelling of 1215112 in words is "one million, two hundred fifteen thousand, one hundred twelve".