121120000000 has 192 divisors, whose sum is σ = 303125200560. Its totient is φ = 48384000000.

The previous prime is 121119999989. The next prime is 121120000039. The reversal of 121120000000 is 21121.

It can be written as a sum of positive squares in 8 ways, for example, as 107017962496 + 14102037504 = 327136^2 + 118752^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159999622 + ... + 160000378.

Almost surely, 2^121120000000 is an apocalyptic number.

121120000000 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 121120000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151562600280).

121120000000 is an abundant number, since it is smaller than the sum of its proper divisors (182005200560).

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

121120000000 is an frugal number, since it uses more digits than its factorization.

121120000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 121120000000 its reverse (21121), we get a palindrome (121120021121).

The spelling of 121120000000 in words is "one hundred twenty-one billion, one hundred twenty million", and thus it is an aban number.