121243434141441 has 4 divisors (see below), whose sum is σ = 161657912188592. Its totient is φ = 80828956094292.

The previous prime is 121243434141301. The next prime is 121243434141457. The reversal of 121243434141441 is 144141434342121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121243434141441 - 2¹³ = 121243434133249 is a prime.

It is a super-2 number, since 2×121243434141441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121243434141441.

It is not an unprimeable number, because it can be changed into a prime (121243435141441) 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 3 ways as a sum of consecutive naturals, for example, 20207239023571 + ... + 20207239023576.

It is an arithmetic number, because the mean of its divisors is an integer number (40414478047148).

Almost surely, 2^{121243434141441} is an apocalyptic number.

It is an amenable number.

121243434141441 is a deficient number, since it is larger than the sum of its proper divisors (40414478047151).

121243434141441 is an equidigital number, since it uses as much as digits as its factorization.

121243434141441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40414478047150.

The product of its digits is 147456, while the sum is 39.

Adding to 121243434141441 its reverse (144141434342121), we get a palindrome (265384868483562).

The spelling of 121243434141441 in words is "one hundred twenty-one trillion, two hundred forty-three billion, four hundred thirty-four million, one hundred forty-one thousand, four hundred forty-one".