121142134221443 has 32 divisors (see below), whose sum is σ = 131968487770560. Its totient is φ = 110751777239040.

The previous prime is 121142134221439. The next prime is 121142134221457. The reversal of 121142134221443 is 344122431241121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121142134221443 - 2² = 121142134221439 is a prime.

It is a super-3 number, since 3×121142134221443³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (121142134221473) 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 31 ways as a sum of consecutive naturals, for example, 242171621 + ... + 242671337.

It is an arithmetic number, because the mean of its divisors is an integer number (4124015242830).

Almost surely, 2^{121142134221443} is an apocalyptic number.

121142134221443 is a deficient number, since it is larger than the sum of its proper divisors (10826353549117).

121142134221443 is a wasteful number, since it uses less digits than its factorization.

121142134221443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501287.

The product of its digits is 36864, while the sum is 35.

Adding to 121142134221443 its reverse (344122431241121), we get a palindrome (465264565462564).

The spelling of 121142134221443 in words is "one hundred twenty-one trillion, one hundred forty-two billion, one hundred thirty-four million, two hundred twenty-one thousand, four hundred forty-three".