121204144340 has 24 divisors (see below), whose sum is σ = 254749888512. Its totient is φ = 48439527200.

The previous prime is 121204144339. The next prime is 121204144357. The reversal of 121204144340 is 43441402121.

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 7 ways as a sum of consecutive naturals, for example, 2609564 + ... + 2655603.

It is an arithmetic number, because the mean of its divisors is an integer number (10614578688).

Almost surely, 2^121204144340 is an apocalyptic number.

121204144340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121204144340 is an abundant number, since it is smaller than the sum of its proper divisors (133545744172).

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

121204144340 is a wasteful number, since it uses less digits than its factorization.

121204144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266327 (or 5266325 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121204144340 its reverse (43441402121), we get a palindrome (164645546461).

The spelling of 121204144340 in words is "one hundred twenty-one billion, two hundred four million, one hundred forty-four thousand, three hundred forty".