121320404 has 12 divisors (see below), whose sum is σ = 214372704. Its totient is φ = 60071064.

The previous prime is 121320403. The next prime is 121320481. The reversal of 121320404 is 404023121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146822 + ... + 147645.

It is an arithmetic number, because the mean of its divisors is an integer number (17864392).

Almost surely, 2^121320404 is an apocalyptic number.

It is an amenable number.

121320404 is a deficient number, since it is larger than the sum of its proper divisors (93052300).

121320404 is a wasteful number, since it uses less digits than its factorization.

121320404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294574 (or 294572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121320404 is about 11014.5541897982. The cubic root of 121320404 is about 495.0449287519.

Adding to 121320404 its reverse (404023121), we get a palindrome (525343525).

The spelling of 121320404 in words is "one hundred twenty-one million, three hundred twenty thousand, four hundred four".