121790988288 has 170 divisors, whose sum is σ = 363882455904. Its totient is φ = 40595226624.

The previous prime is 121790988287. The next prime is 121790988307. The reversal of 121790988288 is 882889097121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121790988283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5296945 + ... + 5319887.

Almost surely, 2^121790988288 is an apocalyptic number.

121790988288 is a gapful number since it is divisible by the number (18) 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 121790988288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181941227952).

121790988288 is an abundant number, since it is smaller than the sum of its proper divisors (242091467616).

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

121790988288 is an frugal number, since it uses more digits than its factorization.

121790988288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22987 (or 22948 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 63.

The spelling of 121790988288 in words is "one hundred twenty-one billion, seven hundred ninety million, nine hundred eighty-eight thousand, two hundred eighty-eight".