2001322201 has 2 divisors, whose sum is σ = 2001322202. Its totient is φ = 2001322200.

The previous prime is 2001322199. The next prime is 2001322291. The reversal of 2001322201 is 1022231002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1098259600 + 903062601 = 33140^2 + 30051^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001322201 - 2¹ = 2001322199 is a prime.

Together with 2001322199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2001322291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000661100 + 1000661101.

It is an arithmetic number, because the mean of its divisors is an integer number (1000661101).

Almost surely, 2^2001322201 is an apocalyptic number.

It is an amenable number.

2001322201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001322201 is an equidigital number, since it uses as much as digits as its factorization.

2001322201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2001322201 is about 44736.1397641772. The cubic root of 2001322201 is about 1260.1986335456.

Adding to 2001322201 its reverse (1022231002), we get a palindrome (3023553203).

The spelling of 2001322201 in words is "two billion, one million, three hundred twenty-two thousand, two hundred one".