2042442212121 has 24 divisors (see below), whose sum is σ = 2953831899200. Its totient is φ = 1359950013216.

The previous prime is 2042442212077. The next prime is 2042442212131. The reversal of 2042442212121 is 1212122442402.

2042442212121 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 442 + 2 + 1 + 212 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2042442212121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042442212131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34765830 + ... + 34824528.

Almost surely, 2^{2042442212121} is an apocalyptic number.

It is an amenable number.

2042442212121 is a deficient number, since it is larger than the sum of its proper divisors (911389687079).

2042442212121 is a wasteful number, since it uses less digits than its factorization.

2042442212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63405 (or 63402 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 2042442212121 its reverse (1212122442402), we get a palindrome (3254564654523).

The spelling of 2042442212121 in words is "two trillion, forty-two billion, four hundred forty-two million, two hundred twelve thousand, one hundred twenty-one".