1215118001 has 8 divisors (see below), whose sum is σ = 1291027680. Its totient is φ = 1140403968.

The previous prime is 1215117977. The next prime is 1215118013. The reversal of 1215118001 is 1008115121.

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

It is a cyclic number.

It is not a de Polignac number, because 1215118001 - 2¹⁴ = 1215101617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215118031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296816 + ... + 300881.

It is an arithmetic number, because the mean of its divisors is an integer number (161378460).

Almost surely, 2^1215118001 is an apocalyptic number.

It is an amenable number.

1215118001 is a deficient number, since it is larger than the sum of its proper divisors (75909679).

1215118001 is a wasteful number, since it uses less digits than its factorization.

1215118001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597823.

The product of its (nonzero) digits is 80, while the sum is 20.

The square root of 1215118001 is about 34858.5427262816. The cubic root of 1215118001 is about 1067.1025348351.

The spelling of 1215118001 in words is "one billion, two hundred fifteen million, one hundred eighteen thousand, one".