121434424431 has 8 divisors (see below), whose sum is σ = 161916504240. Its totient is φ = 80954313792.

The previous prime is 121434424411. The next prime is 121434424453. The reversal of 121434424431 is 134424434121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121434424431 - 2⁵ = 121434424399 is a prime.

It is a super-2 number, since 2×121434424431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121434424392 and 121434424401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121434424411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341830 + ... + 599763.

It is an arithmetic number, because the mean of its divisors is an integer number (20239563030).

Almost surely, 2^121434424431 is an apocalyptic number.

121434424431 is a deficient number, since it is larger than the sum of its proper divisors (40482079809).

121434424431 is an equidigital number, since it uses as much as digits as its factorization.

121434424431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984585.

The product of its digits is 36864, while the sum is 33.

Adding to 121434424431 its reverse (134424434121), we get a palindrome (255858858552).

The spelling of 121434424431 in words is "one hundred twenty-one billion, four hundred thirty-four million, four hundred twenty-four thousand, four hundred thirty-one".