12221000002001 has 8 divisors (see below), whose sum is σ = 13967570952384. Its totient is φ = 10474607503440.

The previous prime is 12221000001983. The next prime is 12221000002019. The reversal of 12221000002001 is 10020000012221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12221000001983) and next prime (12221000002019).

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 12221000002001 - 2⁴² = 7822953490897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221000002031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44466170 + ... + 44740163.

It is an arithmetic number, because the mean of its divisors is an integer number (1745946369048).

Almost surely, 2^{12221000002001} is an apocalyptic number.

It is an amenable number.

12221000002001 is a deficient number, since it is larger than the sum of its proper divisors (1746570950383).

12221000002001 is an equidigital number, since it uses as much as digits as its factorization.

12221000002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89225911.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12221000002001 its reverse (10020000012221), we get a palindrome (22241000014222).

The spelling of 12221000002001 in words is "twelve trillion, two hundred twenty-one billion, two thousand, one".