12101654721 has 16 divisors (see below), whose sum is σ = 17381606144. Its totient is φ = 7445084544.

The previous prime is 12101654717. The next prime is 12101654749. The reversal of 12101654721 is 12745610121.

It is not a de Polignac number, because 12101654721 - 2² = 12101654717 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101653721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103725 + ... + 186981.

It is an arithmetic number, because the mean of its divisors is an integer number (1086350384).

Almost surely, 2^12101654721 is an apocalyptic number.

It is an amenable number.

12101654721 is a deficient number, since it is larger than the sum of its proper divisors (5279951423).

12101654721 is a wasteful number, since it uses less digits than its factorization.

12101654721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87000.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 12101654721 in words is "twelve billion, one hundred one million, six hundred fifty-four thousand, seven hundred twenty-one".