121004365020 has 192 divisors, whose sum is σ = 426599212032. Its totient is φ = 24894720000.

The previous prime is 121004364989. The next prime is 121004365039. The reversal of 121004365020 is 20563400121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 336960 + ... + 596280.

It is an arithmetic number, because the mean of its divisors is an integer number (2221870896).

Almost surely, 2^121004365020 is an apocalyptic number.

121004365020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121004365020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213299606016).

121004365020 is an abundant number, since it is smaller than the sum of its proper divisors (305594847012).

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

121004365020 is a wasteful number, since it uses less digits than its factorization.

121004365020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259452 (or 259450 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 121004365020 its reverse (20563400121), we get a palindrome (141567765141).

The spelling of 121004365020 in words is "one hundred twenty-one billion, four million, three hundred sixty-five thousand, twenty".