12021669344 has 24 divisors (see below), whose sum is σ = 23683671648. Its totient is φ = 6006768640.

The previous prime is 12021669311. The next prime is 12021669349. The reversal of 12021669344 is 44396612021.

It is a junction number, because it is equal to n+sod(n) for n = 12021669298 and 12021669307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021669349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78737 + ... + 173904.

It is an arithmetic number, because the mean of its divisors is an integer number (986819652).

Almost surely, 2^12021669344 is an apocalyptic number.

It is an amenable number.

12021669344 is a deficient number, since it is larger than the sum of its proper divisors (11662002304).

12021669344 is a wasteful number, since it uses less digits than its factorization.

12021669344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254138 (or 254130 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 12021669344 in words is "twelve billion, twenty-one million, six hundred sixty-nine thousand, three hundred forty-four".