12021011312144 has 20 divisors (see below), whose sum is σ = 23832353823696. Its totient is φ = 5870726454432.

The previous prime is 12021011312131. The next prime is 12021011312171. The reversal of 12021011312144 is 44121311012021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8736199394 + ... + 8736200769.

Almost surely, 2^{12021011312144} is an apocalyptic number.

It is an amenable number.

12021011312144 is a deficient number, since it is larger than the sum of its proper divisors (11811342511552).

12021011312144 is a wasteful number, since it uses less digits than its factorization.

12021011312144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17472400214 (or 17472400208 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 12021011312144 its reverse (44121311012021), we get a palindrome (56142322324165).

The spelling of 12021011312144 in words is "twelve trillion, twenty-one billion, eleven million, three hundred twelve thousand, one hundred forty-four".