2143212515 has 8 divisors (see below), whose sum is σ = 2572235568. Its totient is φ = 1714316320.

The previous prime is 2143212499. The next prime is 2143212517. The reversal of 2143212515 is 5152123412.

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

It is not a de Polignac number, because 2143212515 - 2⁴ = 2143212499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143212517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10589 + ... + 66321.

It is an arithmetic number, because the mean of its divisors is an integer number (321529446).

Almost surely, 2^2143212515 is an apocalyptic number.

2143212515 is a deficient number, since it is larger than the sum of its proper divisors (429023053).

2143212515 is an equidigital number, since it uses as much as digits as its factorization.

2143212515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63429.

The product of its digits is 2400, while the sum is 26.

The square root of 2143212515 is about 46294.8432873468. The cubic root of 2143212515 is about 1289.3032543375.

Adding to 2143212515 its reverse (5152123412), we get a palindrome (7295335927).

The spelling of 2143212515 in words is "two billion, one hundred forty-three million, two hundred twelve thousand, five hundred fifteen".