20001003221201 has 16 divisors (see below), whose sum is σ = 20143989480384. Its totient is φ = 19858447353024.

The previous prime is 20001003221149. The next prime is 20001003221321. The reversal of 20001003221201 is 10212230010002.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001003221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001003271201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064609930 + ... + 1064628716.

It is an arithmetic number, because the mean of its divisors is an integer number (1258999342524).

Almost surely, 2^{20001003221201} is an apocalyptic number.

It is an amenable number.

20001003221201 is a deficient number, since it is larger than the sum of its proper divisors (142986259183).

20001003221201 is a wasteful number, since it uses less digits than its factorization.

20001003221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29840.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001003221201 its reverse (10212230010002), we get a palindrome (30213233231203).

The spelling of 20001003221201 in words is "twenty trillion, one billion, three million, two hundred twenty-one thousand, two hundred one".