121513772 has 12 divisors (see below), whose sum is σ = 218396640. Its totient is φ = 59114736.

The previous prime is 121513751. The next prime is 121513783. The reversal of 121513772 is 277315121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410372 + ... + 410667.

It is an arithmetic number, because the mean of its divisors is an integer number (18199720).

Almost surely, 2^121513772 is an apocalyptic number.

It is an amenable number.

121513772 is a deficient number, since it is larger than the sum of its proper divisors (96882868).

121513772 is a wasteful number, since it uses less digits than its factorization.

121513772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821080 (or 821078 counting only the distinct ones).

The product of its digits is 2940, while the sum is 29.

The square root of 121513772 is about 11023.3285354289. The cubic root of 121513772 is about 495.3078002659.

Adding to 121513772 its reverse (277315121), we get a palindrome (398828893).

The spelling of 121513772 in words is "one hundred twenty-one million, five hundred thirteen thousand, seven hundred seventy-two".