121311124143 has 32 divisors (see below), whose sum is σ = 186866300160. Its totient is φ = 69184412160.

The previous prime is 121311124141. The next prime is 121311124153. The reversal of 121311124143 is 341421113121.

It is not a de Polignac number, because 121311124143 - 2¹ = 121311124141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311124141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3656353 + ... + 3689381.

It is an arithmetic number, because the mean of its divisors is an integer number (5839571880).

Almost surely, 2^121311124143 is an apocalyptic number.

121311124143 is a deficient number, since it is larger than the sum of its proper divisors (65555176017).

121311124143 is a wasteful number, since it uses less digits than its factorization.

121311124143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39607.

The product of its digits is 576, while the sum is 24.

Adding to 121311124143 its reverse (341421113121), we get a palindrome (462732237264).

The spelling of 121311124143 in words is "one hundred twenty-one billion, three hundred eleven million, one hundred twenty-four thousand, one hundred forty-three".