121305412 has 6 divisors (see below), whose sum is σ = 212284478. Its totient is φ = 60652704.

The previous prime is 121305409. The next prime is 121305461. The reversal of 121305412 is 214503121.

It can be written as a sum of positive squares in only one way, i.e., 113720896 + 7584516 = 10664^2 + 2754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121305412.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15163173 + ... + 15163180.

Almost surely, 2^121305412 is an apocalyptic number.

It is an amenable number.

121305412 is a deficient number, since it is larger than the sum of its proper divisors (90979066).

121305412 is a wasteful number, since it uses less digits than its factorization.

121305412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30326357 (or 30326355 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121305412 is about 11013.8736146734. The cubic root of 121305412 is about 495.0245364160.

Adding to 121305412 its reverse (214503121), we get a palindrome (335808533).

The spelling of 121305412 in words is "one hundred twenty-one million, three hundred five thousand, four hundred twelve".