121303032240 has 480 divisors, whose sum is σ = 436892037120. Its totient is φ = 27623946240.

The previous prime is 121303032199. The next prime is 121303032287. The reversal of 121303032240 is 42230303121.

It is a super-3 number, since 3×121303032240³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68960481 + ... + 68962239.

It is an arithmetic number, because the mean of its divisors is an integer number (910191744).

Almost surely, 2^121303032240 is an apocalyptic number.

121303032240 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 121303032240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218446018560).

121303032240 is an abundant number, since it is smaller than the sum of its proper divisors (315589004880).

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

121303032240 is a wasteful number, since it uses less digits than its factorization.

121303032240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 121303032240 its reverse (42230303121), we get a palindrome (163533335361).

The spelling of 121303032240 in words is "one hundred twenty-one billion, three hundred three million, thirty-two thousand, two hundred forty".