121121204 has 6 divisors (see below), whose sum is σ = 211962114. Its totient is φ = 60560600.

The previous prime is 121121201. The next prime is 121121213. The reversal of 121121204 is 402121121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 58553104 = 7910^2 + 7652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121201) by changing a digit.

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, 15140147 + ... + 15140154.

It is an arithmetic number, because the mean of its divisors is an integer number (35327019).

Almost surely, 2^121121204 is an apocalyptic number.

It is an amenable number.

121121204 is a deficient number, since it is larger than the sum of its proper divisors (90840910).

121121204 is a wasteful number, since it uses less digits than its factorization.

121121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280305 (or 30280303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 121121204 is about 11005.5078937776. The cubic root of 121121204 is about 494.7738367569.

Adding to 121121204 its reverse (402121121), we get a palindrome (523242325).

The spelling of 121121204 in words is "one hundred twenty-one million, one hundred twenty-one thousand, two hundred four".