1215134001 has 32 divisors (see below), whose sum is σ = 1863065600. Its totient is φ = 781935120.

The previous prime is 1215133993. The next prime is 1215134059. The reversal of 1215134001 is 1004315121.

It is not a de Polignac number, because 1215134001 - 2³ = 1215133993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215134101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365790 + ... + 369096.

It is an arithmetic number, because the mean of its divisors is an integer number (58220800).

Almost surely, 2^1215134001 is an apocalyptic number.

It is an amenable number.

1215134001 is a deficient number, since it is larger than the sum of its proper divisors (647931599).

1215134001 is a wasteful number, since it uses less digits than its factorization.

1215134001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786 (or 3780 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1215134001 is about 34858.7722245061. The cubic root of 1215134001 is about 1067.1072184860.

Adding to 1215134001 its reverse (1004315121), we get a palindrome (2219449122).

The spelling of 1215134001 in words is "one billion, two hundred fifteen million, one hundred thirty-four thousand, one".