121202404 has 6 divisors (see below), whose sum is σ = 212104214. Its totient is φ = 60601200.

The previous prime is 121202383. The next prime is 121202407. The reversal of 121202404 is 404202121.

It can be written as a sum of positive squares in only one way, i.e., 89302500 + 31899904 = 9450^2 + 5648^2 .

It is not an unprimeable number, because it can be changed into a prime (121202407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15150297 + ... + 15150304.

Almost surely, 2^121202404 is an apocalyptic number.

It is an amenable number.

121202404 is a deficient number, since it is larger than the sum of its proper divisors (90901810).

121202404 is a wasteful number, since it uses less digits than its factorization.

121202404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30300605 (or 30300603 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 121202404 is about 11009.1963376079. The cubic root of 121202404 is about 494.8843779878.

Adding to 121202404 its reverse (404202121), we get a palindrome (525404525).

The spelling of 121202404 in words is "one hundred twenty-one million, two hundred two thousand, four hundred four".