20101201 has 2 divisors, whose sum is σ = 20101202. Its totient is φ = 20101200.

The previous prime is 20101199. The next prime is 20101219. The reversal of 20101201 is 10210102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18696976 + 1404225 = 4324^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101201 - 2¹ = 20101199 is a prime.

Together with 20101199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20101261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050600 + 10050601.

It is an arithmetic number, because the mean of its divisors is an integer number (10050601).

Almost surely, 2^20101201 is an apocalyptic number.

It is an amenable number.

20101201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101201 is an equidigital number, since it uses as much as digits as its factorization.

20101201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 20101201 is about 4483.4362937372. The cubic root of 20101201 is about 271.8988278935.

Adding to 20101201 its reverse (10210102), we get a palindrome (30311303).

It can be divided in two parts, 20101 and 201, that added together give a palindrome (20302).

The spelling of 20101201 in words is "twenty million, one hundred one thousand, two hundred one".