12124442121 has 48 divisors (see below), whose sum is σ = 18162735360. Its totient is φ = 7186687200.

The previous prime is 12124442117. The next prime is 12124442131.

It is a happy number.

12124442121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12124442121 - 2² = 12124442117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12124442091 and 12124442100.

It is not an unprimeable number, because it can be changed into a prime (12124442131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4517646 + ... + 4520328.

It is an arithmetic number, because the mean of its divisors is an integer number (378390320).

Almost surely, 2^12124442121 is an apocalyptic number.

12124442121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12124442121 is a deficient number, since it is larger than the sum of its proper divisors (6038293239).

12124442121 is a wasteful number, since it uses less digits than its factorization.

12124442121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2967 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The spelling of 12124442121 in words is "twelve billion, one hundred twenty-four million, four hundred forty-two thousand, one hundred twenty-one".