121804366537020 has 192 divisors, whose sum is σ = 352032544281600. Its totient is φ = 31447908096000.

The previous prime is 121804366537019. The next prime is 121804366537079. The reversal of 121804366537020 is 20735663408121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 376127131 + ... + 376450829.

It is an arithmetic number, because the mean of its divisors is an integer number (1833502834800).

Almost surely, 2^{121804366537020} is an apocalyptic number.

121804366537020 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 121804366537020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176016272140800).

121804366537020 is an abundant number, since it is smaller than the sum of its proper divisors (230228177744580).

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

121804366537020 is a wasteful number, since it uses less digits than its factorization.

121804366537020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324916 (or 324914 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 121804366537020 in words is "one hundred twenty-one trillion, eight hundred four billion, three hundred sixty-six million, five hundred thirty-seven thousand, twenty".