12101834721 has 8 divisors (see below), whose sum is σ = 16837335360. Its totient is φ = 7717111952.

The previous prime is 12101834687. The next prime is 12101834747. The reversal of 12101834721 is 12743810121.

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

It is a cyclic number.

It is not a de Polignac number, because 12101834721 - 2⁹ = 12101834209 is a prime.

It is a super-2 number, since 2×12101834721² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12101834021) 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, 87694386 + ... + 87694523.

It is an arithmetic number, because the mean of its divisors is an integer number (2104666920).

Almost surely, 2^12101834721 is an apocalyptic number.

It is an amenable number.

12101834721 is a deficient number, since it is larger than the sum of its proper divisors (4735500639).

12101834721 is a wasteful number, since it uses less digits than its factorization.

12101834721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175388935.

The product of its (nonzero) digits is 2688, while the sum is 30.

The spelling of 12101834721 in words is "twelve billion, one hundred one million, eight hundred thirty-four thousand, seven hundred twenty-one".