121012432 has 10 divisors (see below), whose sum is σ = 234461618. Its totient is φ = 60506208.

The previous prime is 121012417. The next prime is 121012439. The reversal of 121012432 is 234210121.

It can be written as a sum of positive squares in only one way, i.e., 82373776 + 38638656 = 9076^2 + 6216^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 7563277 = 121012432 / (1 + 2 + 1 + 0 + 1 + 2 + 4 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3781623 + ... + 3781654.

Almost surely, 2^121012432 is an apocalyptic number.

It is an amenable number.

121012432 is a deficient number, since it is larger than the sum of its proper divisors (113449186).

121012432 is an equidigital number, since it uses as much as digits as its factorization.

121012432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7563285 (or 7563279 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121012432 is about 11000.5650763949. The cubic root of 121012432 is about 494.6256830723.

Adding to 121012432 its reverse (234210121), we get a palindrome (355222553).

The spelling of 121012432 in words is "one hundred twenty-one million, twelve thousand, four hundred thirty-two".