2001002201 has 4 divisors (see below), whose sum is σ = 2182911504. Its totient is φ = 1819092900.

The previous prime is 2001002189. The next prime is 2001002207. The reversal of 2001002201 is 1022001002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001002201 - 2⁶ = 2001002137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001002207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90954635 + ... + 90954656.

It is an arithmetic number, because the mean of its divisors is an integer number (545727876).

Almost surely, 2^2001002201 is an apocalyptic number.

It is an amenable number.

2001002201 is a deficient number, since it is larger than the sum of its proper divisors (181909303).

2001002201 is a wasteful number, since it uses less digits than its factorization.

2001002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181909302.

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

The square root of 2001002201 is about 44732.5630944617. The cubic root of 2001002201 is about 1260.1314637753.

Adding to 2001002201 its reverse (1022001002), we get a palindrome (3023003203).

The spelling of 2001002201 in words is "two billion, one million, two thousand, two hundred one".