121440212240343 has 16 divisors (see below), whose sum is σ = 168961188936960. Its totient is φ = 77439725753984.

The previous prime is 121440212240293. The next prime is 121440212240351. The reversal of 121440212240343 is 343042212044121.

It is a cyclic number.

It is not a de Polignac number, because 121440212240343 - 2¹² = 121440212236247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440212240363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8764168 + ... + 17879906.

It is an arithmetic number, because the mean of its divisors is an integer number (10560074308560).

Almost surely, 2^{121440212240343} is an apocalyptic number.

121440212240343 is a deficient number, since it is larger than the sum of its proper divisors (47520976696617).

121440212240343 is a wasteful number, since it uses less digits than its factorization.

121440212240343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9308838.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 121440212240343 its reverse (343042212044121), we get a palindrome (464482424284464).

The spelling of 121440212240343 in words is "one hundred twenty-one trillion, four hundred forty billion, two hundred twelve million, two hundred forty thousand, three hundred forty-three".