121431224232 has 24 divisors (see below), whose sum is σ = 328876232490. Its totient is φ = 40477074720.

The previous prime is 121431224221. The next prime is 121431224287. The reversal of 121431224232 is 232422134121.

121431224232 is a `hidden beast` number, since 1 + 2 + 1 + 431 + 224 + 2 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 67405659876 + 54025564356 = 259626^2 + 232434^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121431224196 and 121431224205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 843272319 + ... + 843272462.

Almost surely, 2^121431224232 is an apocalyptic number.

121431224232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121431224232 is an abundant number, since it is smaller than the sum of its proper divisors (207445008258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121431224232 is a wasteful number, since it uses less digits than its factorization.

121431224232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686544793 (or 1686544786 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 121431224232 its reverse (232422134121), we get a palindrome (353853358353).

The spelling of 121431224232 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-four thousand, two hundred thirty-two".