121131204 has 12 divisors (see below), whose sum is σ = 282639504. Its totient is φ = 40377064.

The previous prime is 121131151. The next prime is 121131209. The reversal of 121131204 is 402131121.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (121131209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5047122 + ... + 5047145.

It is an arithmetic number, because the mean of its divisors is an integer number (23553292).

Almost surely, 2^121131204 is an apocalyptic number.

It is an amenable number.

121131204 is an abundant number, since it is smaller than the sum of its proper divisors (161508300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121131204 is a wasteful number, since it uses less digits than its factorization.

121131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10094274 (or 10094272 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121131204 is about 11005.9622023701. The cubic root of 121131204 is about 494.7874528760.

Adding to 121131204 its reverse (402131121), we get a palindrome (523262325).

The spelling of 121131204 in words is "one hundred twenty-one million, one hundred thirty-one thousand, two hundred four".