121144320000 has 840 divisors, whose sum is σ = 479049405120. Its totient is φ = 29245440000.

The previous prime is 121144319963. The next prime is 121144320023. The reversal of 121144320000 is 23441121.

121144320000 is a `hidden beast` number, since 1 + 21 + 1 + 443 + 200 + 0 + 0 = 666.

It is a super-3 number, since 3×121144320000³ (a number of 34 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 506879881 + ... + 506880119.

Almost surely, 2^121144320000 is an apocalyptic number.

121144320000 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 121144320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239524702560).

121144320000 is an abundant number, since it is smaller than the sum of its proper divisors (357905085120).

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

121144320000 is an equidigital number, since it uses as much as digits as its factorization.

121144320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 260 counting only the distinct ones).

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

Adding to 121144320000 its reverse (23441121), we get a palindrome (121167761121).

It can be divided in two parts, 121144 and 320000, that added together give a palindrome (441144).

The spelling of 121144320000 in words is "one hundred twenty-one billion, one hundred forty-four million, three hundred twenty thousand".