20102001012205 has 16 divisors (see below), whose sum is σ = 28457763646464. Its totient is φ = 13339576707840.

The previous prime is 20102001012193. The next prime is 20102001012211. The reversal of 20102001012205 is 50221010020102.

It is a happy number.

It is not a de Polignac number, because 20102001012205 - 2¹⁹ = 20102000487917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9263593852 + ... + 9263596021.

It is an arithmetic number, because the mean of its divisors is an integer number (1778610227904).

Almost surely, 2^{20102001012205} is an apocalyptic number.

It is an amenable number.

20102001012205 is a deficient number, since it is larger than the sum of its proper divisors (8355762634259).

20102001012205 is a wasteful number, since it uses less digits than its factorization.

20102001012205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18527189916.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20102001012205 its reverse (50221010020102), we get a palindrome (70323011032307).

The spelling of 20102001012205 in words is "twenty trillion, one hundred two billion, one million, twelve thousand, two hundred five".