1215302001 has 16 divisors (see below), whose sum is σ = 1744804800. Its totient is φ = 749616128.

The previous prime is 1215301987. The next prime is 1215302003. The reversal of 1215302001 is 1002035121.

It is a cyclic number.

It is not a de Polignac number, because 1215302001 - 2⁶ = 1215301937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1215302003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198936 + ... + 204953.

It is an arithmetic number, because the mean of its divisors is an integer number (109050300).

Almost surely, 2^1215302001 is an apocalyptic number.

It is an amenable number.

1215302001 is a deficient number, since it is larger than the sum of its proper divisors (529502799).

1215302001 is a wasteful number, since it uses less digits than its factorization.

1215302001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403968.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1215302001 is about 34861.1818646471. The cubic root of 1215302001 is about 1067.1563943386.

Adding to 1215302001 its reverse (1002035121), we get a palindrome (2217337122).

The spelling of 1215302001 in words is "one billion, two hundred fifteen million, three hundred two thousand, one".