1001202201 has 20 divisors (see below), whose sum is σ = 1499008500. Its totient is φ = 665957376.

The previous prime is 1001202197. The next prime is 1001202221. The reversal of 1001202201 is 1022021001.

1001202201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 480267225 + 520934976 = 21915^2 + 22824^2 .

It is not a de Polignac number, because 1001202201 - 2² = 1001202197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1001202221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22605 + ... + 50133.

It is an arithmetic number, because the mean of its divisors is an integer number (74950425).

Almost surely, 2^1001202201 is an apocalyptic number.

It is an amenable number.

1001202201 is a deficient number, since it is larger than the sum of its proper divisors (497806299).

1001202201 is an equidigital number, since it uses as much as digits as its factorization.

1001202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27990 (or 27981 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1001202201 is about 31641.7793589425. The cubic root of 1001202201 is about 1000.4005731864.

Adding to 1001202201 its reverse (1022021001), we get a palindrome (2023223202).

The spelling of 1001202201 in words is "one billion, one million, two hundred two thousand, two hundred one".