12306627721 has 16 divisors (see below), whose sum is σ = 12982837248. Its totient is φ = 11648221200.

The previous prime is 12306627689. The next prime is 12306627793. The reversal of 12306627721 is 12772660321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12306627721 - 2⁵ = 12306627689 is a prime.

It is a super-3 number, since 3×12306627721³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12306627121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4140766 + ... + 4143736.

It is an arithmetic number, because the mean of its divisors is an integer number (811427328).

Almost surely, 2^12306627721 is an apocalyptic number.

It is an amenable number.

12306627721 is a deficient number, since it is larger than the sum of its proper divisors (676209527).

12306627721 is a wasteful number, since it uses less digits than its factorization.

12306627721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 12306627721 in words is "twelve billion, three hundred six million, six hundred twenty-seven thousand, seven hundred twenty-one".