12423132111421 has 8 divisors (see below), whose sum is σ = 12471607403640. Its totient is φ = 12374657875968.

The previous prime is 12423132111373. The next prime is 12423132111427. The reversal of 12423132111421 is 12411123132421.

It can be written as a sum of positive squares in 4 ways, for example, as 7971243108921 + 4451889002500 = 2823339^2 + 2109950^2 .

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 12423132111421 - 2¹³ = 12423132103229 is a prime.

It is a super-2 number, since 2×12423132111421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12423132111421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423132111427) 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, 30071755 + ... + 30482071.

It is an arithmetic number, because the mean of its divisors is an integer number (1558950925455).

Almost surely, 2^{12423132111421} is an apocalyptic number.

It is an amenable number.

12423132111421 is a deficient number, since it is larger than the sum of its proper divisors (48475292219).

12423132111421 is a wasteful number, since it uses less digits than its factorization.

12423132111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528383.

The product of its digits is 2304, while the sum is 28.

Adding to 12423132111421 its reverse (12411123132421), we get a palindrome (24834255243842).

The spelling of 12423132111421 in words is "twelve trillion, four hundred twenty-three billion, one hundred thirty-two million, one hundred eleven thousand, four hundred twenty-one".