121233321121143 has 32 divisors (see below), whose sum is σ = 201566117555712. Its totient is φ = 62967285532800.

The previous prime is 121233321121139. The next prime is 121233321121183. The reversal of 121233321121143 is 341121123332121.

It is not a de Polignac number, because 121233321121143 - 2² = 121233321121139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121233321121143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233321121123) 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, 44778328 + ... + 47408493.

It is an arithmetic number, because the mean of its divisors is an integer number (6298941173616).

Almost surely, 2^{121233321121143} is an apocalyptic number.

121233321121143 is a deficient number, since it is larger than the sum of its proper divisors (80332796434569).

121233321121143 is a wasteful number, since it uses less digits than its factorization.

121233321121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92192535.

The product of its digits is 5184, while the sum is 30.

Adding to 121233321121143 its reverse (341121123332121), we get a palindrome (462354444453264).

The spelling of 121233321121143 in words is "one hundred twenty-one trillion, two hundred thirty-three billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-three".