121217704 has 8 divisors (see below), whose sum is σ = 227283210. Its totient is φ = 60608848.

The previous prime is 121217669. The next prime is 121217711. The reversal of 121217704 is 407712121.

It can be written as a sum of positive squares in only one way, i.e., 75655204 + 45562500 = 8698^2 + 6750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 15.

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, 7576099 + ... + 7576114.

Almost surely, 2^121217704 is an apocalyptic number.

It is an amenable number.

121217704 is a deficient number, since it is larger than the sum of its proper divisors (106065506).

121217704 is a wasteful number, since it uses less digits than its factorization.

121217704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152219 (or 15152215 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 121217704 is about 11009.8911892897. The cubic root of 121217704 is about 494.9052010412.

Adding to 121217704 its reverse (407712121), we get a palindrome (528929825).

The spelling of 121217704 in words is "one hundred twenty-one million, two hundred seventeen thousand, seven hundred four".