12069149721 has 8 divisors (see below), whose sum is σ = 16332381984. Its totient is φ = 7926008640.

The previous prime is 12069149699. The next prime is 12069149737. The reversal of 12069149721 is 12794196021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12069149721 - 2¹³ = 12069141529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12069142721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30022560 + ... + 30022961.

It is an arithmetic number, because the mean of its divisors is an integer number (2041547748).

Almost surely, 2^12069149721 is an apocalyptic number.

It is an amenable number.

12069149721 is a deficient number, since it is larger than the sum of its proper divisors (4263232263).

12069149721 is an equidigital number, since it uses as much as digits as its factorization.

12069149721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60045591.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 12069149721 in words is "twelve billion, sixty-nine million, one hundred forty-nine thousand, seven hundred twenty-one".