1215122416 has 20 divisors (see below), whose sum is σ = 2370105000. Its totient is φ = 603482432.

The previous prime is 1215122393. The next prime is 1215122437. The reversal of 1215122416 is 6142215121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252466 + ... + 257233.

It is an arithmetic number, because the mean of its divisors is an integer number (118505250).

Almost surely, 2^1215122416 is an apocalyptic number.

1215122416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1215122416 is a deficient number, since it is larger than the sum of its proper divisors (1154982584).

1215122416 is a wasteful number, since it uses less digits than its factorization.

1215122416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509856 (or 509850 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 1215122416 is about 34858.6060535989. The cubic root of 1215122416 is about 1067.1038272341.

Adding to 1215122416 its reverse (6142215121), we get a palindrome (7357337537).

The spelling of 1215122416 in words is "one billion, two hundred fifteen million, one hundred twenty-two thousand, four hundred sixteen".