12122303244021 has 80 divisors (see below), whose sum is σ = 19648494114480. Its totient is φ = 7417990471680.

The previous prime is 12122303244011. The next prime is 12122303244049. The reversal of 12122303244021 is 12044230322121.

12122303244021 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 230 + 3 + 24 + 402 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 104225019921 + 12018078224100 = 322839^2 + 3466710^2 .

It is not a de Polignac number, because 12122303244021 - 2¹⁹ = 12122302719733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122303244011) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 164648265 + ... + 164721873.

It is an arithmetic number, because the mean of its divisors is an integer number (245606176431).

Almost surely, 2^{12122303244021} is an apocalyptic number.

It is an amenable number.

12122303244021 is a deficient number, since it is larger than the sum of its proper divisors (7526190870459).

12122303244021 is a wasteful number, since it uses less digits than its factorization.

12122303244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76596 (or 76587 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12122303244021 its reverse (12044230322121), we get a palindrome (24166533566142).

The spelling of 12122303244021 in words is "twelve trillion, one hundred twenty-two billion, three hundred three million, two hundred forty-four thousand, twenty-one".