121430121432 has 16 divisors (see below), whose sum is σ = 303575303640. Its totient is φ = 40476707136.

The previous prime is 121430121419. The next prime is 121430121473. The reversal of 121430121432 is 234121034121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5059588393 = 121430121432 / (1 + 2 + 1 + 4 + 3 + 0 + 1 + 2 + 1 + 4 + 3 + 2).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 2529794173 + ... + 2529794220.

Almost surely, 2^121430121432 is an apocalyptic number.

121430121432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121430121432 is an abundant number, since it is smaller than the sum of its proper divisors (182145182208).

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

121430121432 is a wasteful number, since it uses less digits than its factorization.

121430121432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059588402 (or 5059588398 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121430121432 its reverse (234121034121), we get a palindrome (355551155553).

The spelling of 121430121432 in words is "one hundred twenty-one billion, four hundred thirty million, one hundred twenty-one thousand, four hundred thirty-two".