1142122440121 has 16 divisors (see below), whose sum is σ = 1277723680128. Its totient is φ = 1014066345600.

The previous prime is 1142122440047. The next prime is 1142122440149. The reversal of 1142122440121 is 1210442212411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142122440121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142122440181) 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, 15052431 + ... + 15128116.

It is an arithmetic number, because the mean of its divisors is an integer number (79857730008).

Almost surely, 2^{1142122440121} is an apocalyptic number.

It is an amenable number.

1142122440121 is a deficient number, since it is larger than the sum of its proper divisors (135601240007).

1142122440121 is a wasteful number, since it uses less digits than its factorization.

1142122440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30180672.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1142122440121 its reverse (1210442212411), we get a palindrome (2352564652532).

The spelling of 1142122440121 in words is "one trillion, one hundred forty-two billion, one hundred twenty-two million, four hundred forty thousand, one hundred twenty-one".