121342531143 has 8 divisors (see below), whose sum is σ = 161813318400. Its totient is φ = 80883382328.

The previous prime is 121342531111. The next prime is 121342531151. The reversal of 121342531143 is 341135243121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121342531143 - 2⁵ = 121342531111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121342531143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342535143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2885253 + ... + 2927006.

It is an arithmetic number, because the mean of its divisors is an integer number (20226664800).

Almost surely, 2^121342531143 is an apocalyptic number.

121342531143 is a deficient number, since it is larger than the sum of its proper divisors (40470787257).

121342531143 is an equidigital number, since it uses as much as digits as its factorization.

121342531143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819221.

The product of its digits is 8640, while the sum is 30.

Adding to 121342531143 its reverse (341135243121), we get a palindrome (462477774264).

The spelling of 121342531143 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred thirty-one thousand, one hundred forty-three".