20102210001 has 12 divisors (see below), whose sum is σ = 29821297012. Its totient is φ = 13039271136.

The previous prime is 20102209991. The next prime is 20102210033. The reversal of 20102210001 is 10001220102.

It can be written as a sum of positive squares in 2 ways, for example, as 18056909376 + 2045300625 = 134376^2 + 45225^2 .

It is not a de Polignac number, because 20102210001 - 2⁹ = 20102209489 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102210041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30183166 + ... + 30183831.

Almost surely, 2^20102210001 is an apocalyptic number.

It is an amenable number.

20102210001 is a deficient number, since it is larger than the sum of its proper divisors (9719087011).

20102210001 is a wasteful number, since it uses less digits than its factorization.

20102210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60367040 (or 60367037 counting only the distinct ones).

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

Adding to 20102210001 its reverse (10001220102), we get a palindrome (30103430103).

The spelling of 20102210001 in words is "twenty billion, one hundred two million, two hundred ten thousand, one".