10201220101 has 4 divisors (see below), whose sum is σ = 10207546092. Its totient is φ = 10194894112.

The previous prime is 10201220083. The next prime is 10201220129. The reversal of 10201220101 is 10102210201.

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 4726700001 + 5474520100 = 68751^2 + 73990^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201220101 - 2⁵ = 10201220069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201220191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160576 + ... + 3163801.

It is an arithmetic number, because the mean of its divisors is an integer number (2551886523).

Almost surely, 2^10201220101 is an apocalyptic number.

It is an amenable number.

10201220101 is a deficient number, since it is larger than the sum of its proper divisors (6325991).

10201220101 is an equidigital number, since it uses as much as digits as its factorization.

10201220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325990.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10201220101 its reverse (10102210201), we get a palindrome (20303430302).

The spelling of 10201220101 in words is "ten billion, two hundred one million, two hundred twenty thousand, one hundred one".