20102201 has 16 divisors (see below), whose sum is σ = 23712000. Its totient is φ = 17033184.

The previous prime is 20102153. The next prime is 20102213. The reversal of 20102201 is 10220102.

It is not a de Polignac number, because 20102201 - 2¹⁴ = 20085817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35045 + ... + 35613.

It is an arithmetic number, because the mean of its divisors is an integer number (1482000).

Almost surely, 2^20102201 is an apocalyptic number.

It is an amenable number.

20102201 is a deficient number, since it is larger than the sum of its proper divisors (3609799).

20102201 is an equidigital number, since it uses as much as digits as its factorization.

20102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 679 counting only the distinct ones).

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

The square root of 20102201 is about 4483.5478139527. The cubic root of 20102201 is about 271.9033366510.

Adding to 20102201 its reverse (10220102), we get a palindrome (30322303).

The spelling of 20102201 in words is "twenty million, one hundred two thousand, two hundred one".