12221201001 has 16 divisors (see below), whose sum is σ = 16356179840. Its totient is φ = 8116899840.

The previous prime is 12221200997. The next prime is 12221201017. The reversal of 12221201001 is 10010212221.

12221201001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221201001 - 2² = 12221200997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221201051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964956 + ... + 977538.

It is an arithmetic number, because the mean of its divisors is an integer number (1022261240).

Almost surely, 2^12221201001 is an apocalyptic number.

It is an amenable number.

12221201001 is a deficient number, since it is larger than the sum of its proper divisors (4134978839).

12221201001 is a wasteful number, since it uses less digits than its factorization.

12221201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13776.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12221201001 its reverse (10010212221), we get a palindrome (22231413222).

The spelling of 12221201001 in words is "twelve billion, two hundred twenty-one million, two hundred one thousand, one".