121430121441 has 4 divisors (see below), whose sum is σ = 161906828592. Its totient is φ = 80953414292.

The previous prime is 121430121419. The next prime is 121430121473. The reversal of 121430121441 is 144121034121.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 144121034121 = 3 ⋅48040344707.

It is a cyclic number.

It is not a de Polignac number, because 121430121441 - 2⁶ = 121430121377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121430121481) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20238353571 + ... + 20238353576.

It is an arithmetic number, because the mean of its divisors is an integer number (40476707148).

Almost surely, 2^121430121441 is an apocalyptic number.

It is an amenable number.

121430121441 is a deficient number, since it is larger than the sum of its proper divisors (40476707151).

121430121441 is an equidigital number, since it uses as much as digits as its factorization.

121430121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40476707150.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 121430121441 its reverse (144121034121), we get a palindrome (265551155562).

The spelling of 121430121441 in words is "one hundred twenty-one billion, four hundred thirty million, one hundred twenty-one thousand, four hundred forty-one".