12121444040002 has 32 divisors (see below), whose sum is σ = 19917265996800. Its totient is φ = 5486962251600.

The previous prime is 12121444039973. The next prime is 12121444040011. The reversal of 12121444040002 is 20004044412121.

It is a happy number.

It is a super-2 number, since 2×12121444040002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4798227 + ... + 6875017.

It is an arithmetic number, because the mean of its divisors is an integer number (622414562400).

Almost surely, 2^{12121444040002} is an apocalyptic number.

12121444040002 is a deficient number, since it is larger than the sum of its proper divisors (7795821956798).

12121444040002 is a wasteful number, since it uses less digits than its factorization.

12121444040002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077902.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 12121444040002 its reverse (20004044412121), we get a palindrome (32125488452123).

The spelling of 12121444040002 in words is "twelve trillion, one hundred twenty-one billion, four hundred forty-four million, forty thousand, two".