12123477432121 has 32 divisors (see below), whose sum is σ = 13768230389760. Its totient is φ = 10580227608000.

The previous prime is 12123477432107. The next prime is 12123477432127.

12123477432121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12123477432121 - 2¹⁵ = 12123477399353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12123477432127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4502290 + ... + 6672148.

It is an arithmetic number, because the mean of its divisors is an integer number (430257199680).

Almost surely, 2^{12123477432121} is an apocalyptic number.

12123477432121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12123477432121 is a deficient number, since it is larger than the sum of its proper divisors (1644752957639).

12123477432121 is a wasteful number, since it uses less digits than its factorization.

12123477432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170125.

The product of its digits is 112896, while the sum is 40.

It can be divided in two parts, 1212347 and 7432121, that added together give a palindrome (8644468).

The spelling of 12123477432121 in words is "twelve trillion, one hundred twenty-three billion, four hundred seventy-seven million, four hundred thirty-two thousand, one hundred twenty-one".