2143212455 has 16 divisors (see below), whose sum is σ = 2639084544. Its totient is φ = 1670098080.

The previous prime is 2143212451. The next prime is 2143212469. The reversal of 2143212455 is 5542123412.

It is not a de Polignac number, because 2143212455 - 2² = 2143212451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143212451) 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 15 ways as a sum of consecutive naturals, for example, 27974 + ... + 71196.

It is an arithmetic number, because the mean of its divisors is an integer number (164942784).

Almost surely, 2^2143212455 is an apocalyptic number.

2143212455 is a deficient number, since it is larger than the sum of its proper divisors (495872089).

2143212455 is a wasteful number, since it uses less digits than its factorization.

2143212455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43486.

The product of its digits is 9600, while the sum is 29.

The square root of 2143212455 is about 46294.8426393265. The cubic root of 2143212455 is about 1289.3032423060.

Adding to 2143212455 its reverse (5542123412), we get a palindrome (7685335867).

The spelling of 2143212455 in words is "two billion, one hundred forty-three million, two hundred twelve thousand, four hundred fifty-five".