121332440240 has 60 divisors (see below), whose sum is σ = 310074601872. Its totient is φ = 44120883840.

The previous prime is 121332440209. The next prime is 121332440267. The reversal of 121332440240 is 42044233121.

It is a super-2 number, since 2×121332440240² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6257492 + ... + 6276851.

Almost surely, 2^121332440240 is an apocalyptic number.

121332440240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121332440240 is an abundant number, since it is smaller than the sum of its proper divisors (188742161632).

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

121332440240 is a wasteful number, since it uses less digits than its factorization.

121332440240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12534378 (or 12534361 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 121332440240 its reverse (42044233121), we get a palindrome (163376673361).

The spelling of 121332440240 in words is "one hundred twenty-one billion, three hundred thirty-two million, four hundred forty thousand, two hundred forty".