2001220001201 has 8 divisors (see below), whose sum is σ = 2022168714720. Its totient is φ = 1980277769088.

The previous prime is 2001220001093. The next prime is 2001220001219. The reversal of 2001220001201 is 1021000221002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001220001201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001220021201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998351 + ... + 2235876.

It is an arithmetic number, because the mean of its divisors is an integer number (252771089340).

Almost surely, 2^{2001220001201} is an apocalyptic number.

It is an amenable number.

2001220001201 is a deficient number, since it is larger than the sum of its proper divisors (20948713519).

2001220001201 is an equidigital number, since it uses as much as digits as its factorization.

2001220001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240703.

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

Adding to 2001220001201 its reverse (1021000221002), we get a palindrome (3022220222203).

The spelling of 2001220001201 in words is "two trillion, one billion, two hundred twenty million, one thousand, two hundred one".