121224444243133 has 64 divisors (see below), whose sum is σ = 159750101532672. Its totient is φ = 89188615802880.

The previous prime is 121224444243079. The next prime is 121224444243143. The reversal of 121224444243133 is 331342444422121.

It is not a de Polignac number, because 121224444243133 - 2⁹ = 121224444242621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121224444243143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64873185 + ... + 66715657.

It is an arithmetic number, because the mean of its divisors is an integer number (2496095336448).

Almost surely, 2^{121224444243133} is an apocalyptic number.

It is an amenable number.

121224444243133 is a deficient number, since it is larger than the sum of its proper divisors (38525657289539).

121224444243133 is a wasteful number, since it uses less digits than its factorization.

121224444243133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842994.

The product of its digits is 442368, while the sum is 40.

Adding to 121224444243133 its reverse (331342444422121), we get a palindrome (452566888665254).

The spelling of 121224444243133 in words is "one hundred twenty-one trillion, two hundred twenty-four billion, four hundred forty-four million, two hundred forty-three thousand, one hundred thirty-three".