121443412 has 6 divisors (see below), whose sum is σ = 212525978. Its totient is φ = 60721704.

The previous prime is 121443409. The next prime is 121443431. The reversal of 121443412 is 214344121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 94361796 + 27081616 = 9714^2 + 5204^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15180423 + ... + 15180430.

Almost surely, 2^121443412 is an apocalyptic number.

It is an amenable number.

121443412 is a deficient number, since it is larger than the sum of its proper divisors (91082566).

121443412 is a wasteful number, since it uses less digits than its factorization.

121443412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30360857 (or 30360855 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 121443412 is about 11020.1366597697. The cubic root of 121443412 is about 495.2121826121.

Adding to 121443412 its reverse (214344121), we get a palindrome (335787533).

The spelling of 121443412 in words is "one hundred twenty-one million, four hundred forty-three thousand, four hundred twelve".