121304010204 has 144 divisors (see below), whose sum is σ = 353105101440. Its totient is φ = 34780723200.

The previous prime is 121304010203. The next prime is 121304010227. The reversal of 121304010204 is 402010403121.

It is a super-2 number, since 2×121304010204² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304010203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 728077 + ... + 879035.

It is an arithmetic number, because the mean of its divisors is an integer number (2452118760).

Almost surely, 2^121304010204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121304010204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176552550720).

121304010204 is an abundant number, since it is smaller than the sum of its proper divisors (231801091236).

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

121304010204 is a wasteful number, since it uses less digits than its factorization.

121304010204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151100 (or 151095 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121304010204 its reverse (402010403121), we get a palindrome (523314413325).

The spelling of 121304010204 in words is "one hundred twenty-one billion, three hundred four million, ten thousand, two hundred four".