121140321410540 has 24 divisors (see below), whose sum is σ = 257253042100320. Its totient is φ = 47911677680768.

The previous prime is 121140321410539. The next prime is 121140321410561. The reversal of 121140321410540 is 45014123041121.

It is a super-3 number, since 3×121140321410540³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34028178392 + ... + 34028181951.

It is an arithmetic number, because the mean of its divisors is an integer number (10718876754180).

Almost surely, 2^{121140321410540} is an apocalyptic number.

121140321410540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121140321410540 is an abundant number, since it is smaller than the sum of its proper divisors (136112720689780).

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

121140321410540 is a wasteful number, since it uses less digits than its factorization.

121140321410540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68056360441 (or 68056360439 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 121140321410540 its reverse (45014123041121), we get a palindrome (166154444451661).

The spelling of 121140321410540 in words is "one hundred twenty-one trillion, one hundred forty billion, three hundred twenty-one million, four hundred ten thousand, five hundred forty".