121000121120000 has 360 divisors, whose sum is σ = 303527900180736. Its totient is φ = 48125564928000.

The previous prime is 121000121119987. The next prime is 121000121120003. The reversal of 121000121120000 is 21121000121.

It is a super-2 number, since 2×121000121120000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000121120003) 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 39 ways as a sum of consecutive naturals, for example, 42352158572 + ... + 42352161428.

Almost surely, 2^{121000121120000} is an apocalyptic number.

121000121120000 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 121000121120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151763950090368).

121000121120000 is an abundant number, since it is smaller than the sum of its proper divisors (182527779060736).

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

121000121120000 is an equidigital number, since it uses as much as digits as its factorization.

121000121120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121000121120000 its reverse (21121000121), we get a palindrome (121021242120121).

The spelling of 121000121120000 in words is "one hundred twenty-one trillion, one hundred twenty-one million, one hundred twenty thousand".