1215100233 has 6 divisors (see below), whose sum is σ = 1755144794. Its totient is φ = 810066816.

The previous prime is 1215100223. The next prime is 1215100253. The reversal of 1215100233 is 3320015121.

1215100233 is a `hidden beast` number, since 121 + 510 + 0 + 2 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1150023744 + 65076489 = 33912^2 + 8067^2 .

It is not a de Polignac number, because 1215100233 - 2¹⁰ = 1215099209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215100223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67505560 + ... + 67505577.

Almost surely, 2^1215100233 is an apocalyptic number.

It is an amenable number.

1215100233 is a deficient number, since it is larger than the sum of its proper divisors (540044561).

1215100233 is a wasteful number, since it uses less digits than its factorization.

1215100233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135011143 (or 135011140 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1215100233 is about 34858.2878667326. The cubic root of 1215100233 is about 1067.0973335926.

Adding to 1215100233 its reverse (3320015121), we get a palindrome (4535115354).

The spelling of 1215100233 in words is "one billion, two hundred fifteen million, one hundred thousand, two hundred thirty-three".