121303251140 has 24 divisors (see below), whose sum is σ = 256569472320. Its totient is φ = 48172225248.

The previous prime is 121303251133. The next prime is 121303251143. The reversal of 121303251140 is 41152303121.

It is a super-2 number, since 2×121303251140² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121303251143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21814352 + ... + 21819911.

It is an arithmetic number, because the mean of its divisors is an integer number (10690394680).

Almost surely, 2^121303251140 is an apocalyptic number.

121303251140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121303251140 is an abundant number, since it is smaller than the sum of its proper divisors (135266221180).

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

121303251140 is a wasteful number, since it uses less digits than its factorization.

121303251140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43634411 (or 43634409 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 121303251140 its reverse (41152303121), we get a palindrome (162455554261).

The spelling of 121303251140 in words is "one hundred twenty-one billion, three hundred three million, two hundred fifty-one thousand, one hundred forty".