20010102201 has 24 divisors (see below), whose sum is σ = 30018236040. Its totient is φ = 12833669376.

The previous prime is 20010102191. The next prime is 20010102253. The reversal of 20010102201 is 10220101002.

It can be written as a sum of positive squares in 4 ways, for example, as 3077586576 + 16932515625 = 55476^2 + 130125^2 .

It is not a de Polignac number, because 20010102201 - 2³³ = 11420167609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20010102701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307950 + ... + 367223.

It is an arithmetic number, because the mean of its divisors is an integer number (1250759835).

Almost surely, 2^20010102201 is an apocalyptic number.

It is an amenable number.

20010102201 is a deficient number, since it is larger than the sum of its proper divisors (10008133839).

20010102201 is a wasteful number, since it uses less digits than its factorization.

20010102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675305 (or 675302 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010102201 its reverse (10220101002), we get a palindrome (30230203203).

The spelling of 20010102201 in words is "twenty billion, ten million, one hundred two thousand, two hundred one".