121343140220 has 48 divisors (see below), whose sum is σ = 257413211328. Its totient is φ = 48043860480.

The previous prime is 121343140211. The next prime is 121343140231. The reversal of 121343140220 is 22041343121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4884230 + ... + 4909010.

It is an arithmetic number, because the mean of its divisors is an integer number (5362775236).

Almost surely, 2^121343140220 is an apocalyptic number.

121343140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121343140220 is an abundant number, since it is smaller than the sum of its proper divisors (136070071108).

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

121343140220 is a wasteful number, since it uses less digits than its factorization.

121343140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27270 (or 27268 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 121343140220 its reverse (22041343121), we get a palindrome (143384483341).

The spelling of 121343140220 in words is "one hundred twenty-one billion, three hundred forty-three million, one hundred forty thousand, two hundred twenty".