2143242240212 has 12 divisors (see below), whose sum is σ = 3812160378516. Its totient is φ = 1054053560640.

The previous prime is 2143242240199. The next prime is 2143242240311. The reversal of 2143242240212 is 2120422423412.

It can be written as a sum of positive squares in 2 ways, for example, as 971336398096 + 1171905842116 = 985564^2 + 1082546^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391889593 + ... + 4391890080.

It is an arithmetic number, because the mean of its divisors is an integer number (317680031543).

Almost surely, 2^{2143242240212} is an apocalyptic number.

It is an amenable number.

2143242240212 is a deficient number, since it is larger than the sum of its proper divisors (1668918138304).

2143242240212 is a wasteful number, since it uses less digits than its factorization.

2143242240212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783779738 (or 8783779736 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2143242240212 its reverse (2120422423412), we get a palindrome (4263664663624).

The spelling of 2143242240212 in words is "two trillion, one hundred forty-three billion, two hundred forty-two million, two hundred forty thousand, two hundred twelve".