121331044143 has 6 divisors (see below), whose sum is σ = 175255952664. Its totient is φ = 80887362756.

The previous prime is 121331044129. The next prime is 121331044223. The reversal of 121331044143 is 341440133121.

121331044143 is a `hidden beast` number, since 1 + 213 + 3 + 1 + 0 + 441 + 4 + 3 = 666.

It is not a de Polignac number, because 121331044143 - 2¹⁴ = 121331027759 is a prime.

It is a super-2 number, since 2×121331044143² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331044843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6740613555 + ... + 6740613572.

It is an arithmetic number, because the mean of its divisors is an integer number (29209325444).

Almost surely, 2^121331044143 is an apocalyptic number.

121331044143 is a deficient number, since it is larger than the sum of its proper divisors (53924908521).

121331044143 is a wasteful number, since it uses less digits than its factorization.

121331044143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13481227133 (or 13481227130 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 121331044143 its reverse (341440133121), we get a palindrome (462771177264).

The spelling of 121331044143 in words is "one hundred twenty-one billion, three hundred thirty-one million, forty-four thousand, one hundred forty-three".