121340244311143 has 32 divisors (see below), whose sum is σ = 145924419981312. Its totient is φ = 99426287251200.

The previous prime is 121340244311123. The next prime is 121340244311159. The reversal of 121340244311143 is 341113442043121.

It is not a de Polignac number, because 121340244311143 - 2¹³ = 121340244302951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121340244311099 and 121340244311108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340244311123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18047446 + ... + 23840947.

It is an arithmetic number, because the mean of its divisors is an integer number (4560138124416).

Almost surely, 2^{121340244311143} is an apocalyptic number.

121340244311143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121340244311143 is a deficient number, since it is larger than the sum of its proper divisors (24584175670169).

121340244311143 is a wasteful number, since it uses less digits than its factorization.

121340244311143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41888895.

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 121340244311143 its reverse (341113442043121), we get a palindrome (462453686354264).

The spelling of 121340244311143 in words is "one hundred twenty-one trillion, three hundred forty billion, two hundred forty-four million, three hundred eleven thousand, one hundred forty-three".