1215230051 has 16 divisors (see below), whose sum is σ = 1415344128. Its totient is φ = 1021896000.

The previous prime is 1215230041. The next prime is 1215230053. The reversal of 1215230051 is 1500325121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1215230051 - 2¹⁴ = 1215213667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215230053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91376 + ... + 103826.

It is an arithmetic number, because the mean of its divisors is an integer number (88459008).

Almost surely, 2^1215230051 is an apocalyptic number.

1215230051 is a deficient number, since it is larger than the sum of its proper divisors (200114077).

1215230051 is a wasteful number, since it uses less digits than its factorization.

1215230051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1215230051 is about 34860.1498992761. The cubic root of 1215230051 is about 1067.1353341637.

Adding to 1215230051 its reverse (1500325121), we get a palindrome (2715555172).

The spelling of 1215230051 in words is "one billion, two hundred fifteen million, two hundred thirty thousand, fifty-one".