1216837112 has 8 divisors (see below), whose sum is σ = 2281569600. Its totient is φ = 608418552.

The previous prime is 1216837081. The next prime is 1216837133. The reversal of 1216837112 is 2117386121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76052312 + ... + 76052327.

It is an arithmetic number, because the mean of its divisors is an integer number (285196200).

Almost surely, 2^1216837112 is an apocalyptic number.

It is an amenable number.

1216837112 is a deficient number, since it is larger than the sum of its proper divisors (1064732488).

1216837112 is a wasteful number, since it uses less digits than its factorization.

1216837112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152104645 (or 152104641 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 1216837112 is about 34883.1923997790. The cubic root of 1216837112 is about 1067.6055321483.

The spelling of 1216837112 in words is "one billion, two hundred sixteen million, eight hundred thirty-seven thousand, one hundred twelve".