1215144422 has 8 divisors (see below), whose sum is σ = 1847685576. Its totient is φ = 599249232.

The previous prime is 1215144419. The next prime is 1215144443. The reversal of 1215144422 is 2244415121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1215144391 and 1215144400.

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, 4161308 + ... + 4161599.

It is an arithmetic number, because the mean of its divisors is an integer number (230960697).

Almost surely, 2^1215144422 is an apocalyptic number.

1215144422 is a deficient number, since it is larger than the sum of its proper divisors (632541154).

1215144422 is an equidigital number, since it uses as much as digits as its factorization.

1215144422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322982.

The product of its digits is 2560, while the sum is 26.

The square root of 1215144422 is about 34858.9216987560. The cubic root of 1215144422 is about 1067.1102689843.

Adding to 1215144422 its reverse (2244415121), we get a palindrome (3459559543).

The spelling of 1215144422 in words is "one billion, two hundred fifteen million, one hundred forty-four thousand, four hundred twenty-two".