12210020001001 has 4 divisors (see below), whose sum is σ = 12210194507332. Its totient is φ = 12209845494672.

The previous prime is 12210020000977. The next prime is 12210020001017. The reversal of 12210020001001 is 10010002001221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7174255110400 + 5035764890601 = 2678480^2 + 2244051^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210020001001 - 2⁷ = 12210020000873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210020001401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87148170 + ... + 87288163.

It is an arithmetic number, because the mean of its divisors is an integer number (3052548626833).

Almost surely, 2^{12210020001001} is an apocalyptic number.

It is an amenable number.

12210020001001 is a deficient number, since it is larger than the sum of its proper divisors (174506331).

12210020001001 is an equidigital number, since it uses as much as digits as its factorization.

12210020001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174506330.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12210020001001 its reverse (10010002001221), we get a palindrome (22220022002222).

The spelling of 12210020001001 in words is "twelve trillion, two hundred ten billion, twenty million, one thousand, one".