101021201 has 4 divisors (see below), whose sum is σ = 101041332. Its totient is φ = 101001072.

The previous prime is 101021177. The next prime is 101021227. The reversal of 101021201 is 102120101.

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 8880400 + 92140801 = 2980^2 + 9599^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021201 - 2²² = 96826897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101021251) 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 in 3 ways as a sum of consecutive naturals, for example, 4235 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (25260333).

Almost surely, 2^101021201 is an apocalyptic number.

It is an amenable number.

101021201 is a deficient number, since it is larger than the sum of its proper divisors (20131).

101021201 is an equidigital number, since it uses as much as digits as its factorization.

101021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130.

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

The square root of 101021201 is about 10050.9303549472. The cubic root of 101021201 is about 465.7335337345.

Adding to 101021201 its reverse (102120101), we get a palindrome (203141302).

The spelling of 101021201 in words is "one hundred one million, twenty-one thousand, two hundred one".