2201010101 has 4 divisors (see below), whose sum is σ = 2203218732. Its totient is φ = 2198801472.

The previous prime is 2201010017. The next prime is 2201010107. The reversal of 2201010101 is 1010101022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1000456900 + 1200553201 = 31630^2 + 34649^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201010101 - 2¹⁸ = 2200747957 is a prime.

It is a Duffinian number.

2201010101 is a modest number, since divided by 10101 gives 2201 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201010107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102820 + ... + 1104813.

It is an arithmetic number, because the mean of its divisors is an integer number (550804683).

Almost surely, 2^2201010101 is an apocalyptic number.

It is an amenable number.

2201010101 is a deficient number, since it is larger than the sum of its proper divisors (2208631).

2201010101 is an equidigital number, since it uses as much as digits as its factorization.

2201010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208630.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2201010101 is about 46914.9240753942. The cubic root of 2201010101 is about 1300.7904662017.

Adding to 2201010101 its reverse (1010101022), we get a palindrome (3211111123).

The spelling of 2201010101 in words is "two billion, two hundred one million, ten thousand, one hundred one".