121230031143 has 16 divisors (see below), whose sum is σ = 174283917920. Its totient is φ = 74513084544.

The previous prime is 121230031141. The next prime is 121230031147. The reversal of 121230031143 is 341130032121.

It is not a de Polignac number, because 121230031143 - 2¹ = 121230031141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230031141) 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 15 ways as a sum of consecutive naturals, for example, 1842496 + ... + 1907157.

It is an arithmetic number, because the mean of its divisors is an integer number (10892744870).

Almost surely, 2^121230031143 is an apocalyptic number.

121230031143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121230031143 is a deficient number, since it is larger than the sum of its proper divisors (53053886777).

121230031143 is a wasteful number, since it uses less digits than its factorization.

121230031143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750498.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121230031143 its reverse (341130032121), we get a palindrome (462360063264).

The spelling of 121230031143 in words is "one hundred twenty-one billion, two hundred thirty million, thirty-one thousand, one hundred forty-three".