12221202001 has 4 divisors (see below), whose sum is σ = 12451790772. Its totient is φ = 11990613232.

The previous prime is 12221201939. The next prime is 12221202017. The reversal of 12221202001 is 10020212221.

It is a happy number.

12221202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10020212221 = 1153 ⋅8690557.

It can be written as a sum of positive squares in 2 ways, for example, as 10245488400 + 1975713601 = 101220^2 + 44449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221202001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221202061) 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 3 ways as a sum of consecutive naturals, for example, 115294306 + ... + 115294411.

It is an arithmetic number, because the mean of its divisors is an integer number (3112947693).

Almost surely, 2^12221202001 is an apocalyptic number.

It is an amenable number.

12221202001 is a deficient number, since it is larger than the sum of its proper divisors (230588771).

12221202001 is an equidigital number, since it uses as much as digits as its factorization.

12221202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230588770.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12221202001 its reverse (10020212221), we get a palindrome (22241414222).

The spelling of 12221202001 in words is "twelve billion, two hundred twenty-one million, two hundred two thousand, one".