2121324142 has 16 divisors (see below), whose sum is σ = 3642445440. Its totient is φ = 907666488.

The previous prime is 2121324131. The next prime is 2121324151. The reversal of 2121324142 is 2414231212.

It is a super-2 number, since 2×2121324142² = 9000032230864072328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113728 + ... + 131059.

It is an arithmetic number, because the mean of its divisors is an integer number (227652840).

Almost surely, 2^2121324142 is an apocalyptic number.

2121324142 is a deficient number, since it is larger than the sum of its proper divisors (1521121298).

2121324142 is a wasteful number, since it uses less digits than its factorization.

2121324142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245415.

The product of its digits is 768, while the sum is 22.

The square root of 2121324142 is about 46057.8347515382. The cubic root of 2121324142 is about 1284.8990603387.

Adding to 2121324142 its reverse (2414231212), we get a palindrome (4535555354).

The spelling of 2121324142 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, one hundred forty-two".