121431100324 has 6 divisors (see below), whose sum is σ = 212504425574. Its totient is φ = 60715550160.

The previous prime is 121431100321. The next prime is 121431100327. The reversal of 121431100324 is 423001134121.

It is an interprime number because it is at equal distance from previous prime (121431100321) and next prime (121431100327).

It can be written as a sum of positive squares in only one way, i.e., 111401077824 + 10030022500 = 333768^2 + 100150^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121431100295 and 121431100304.

It is not an unprimeable number, because it can be changed into a prime (121431100321) 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 as a sum of consecutive naturals, namely, 15178887537 + ... + 15178887544.

Almost surely, 2^121431100324 is an apocalyptic number.

It is an amenable number.

121431100324 is a deficient number, since it is larger than the sum of its proper divisors (91073325250).

121431100324 is a wasteful number, since it uses less digits than its factorization.

121431100324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30357775085 (or 30357775083 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121431100324 its reverse (423001134121), we get a palindrome (544432234445).

The spelling of 121431100324 in words is "one hundred twenty-one billion, four hundred thirty-one million, one hundred thousand, three hundred twenty-four".