12406121444 has 6 divisors (see below), whose sum is σ = 21710712534. Its totient is φ = 6203060720.

The previous prime is 12406121419. The next prime is 12406121461. The reversal of 12406121444 is 44412160421.

It can be written as a sum of positive squares in only one way, i.e., 9003732544 + 3402388900 = 94888^2 + 58330^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550765177 + ... + 1550765184.

It is an arithmetic number, because the mean of its divisors is an integer number (3618452089).

Almost surely, 2^12406121444 is an apocalyptic number.

It is an amenable number.

12406121444 is a deficient number, since it is larger than the sum of its proper divisors (9304591090).

12406121444 is a wasteful number, since it uses less digits than its factorization.

12406121444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101530365 (or 3101530363 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 12406121444 its reverse (44412160421), we get a palindrome (56818281865).

The spelling of 12406121444 in words is "twelve billion, four hundred six million, one hundred twenty-one thousand, four hundred forty-four".