20001010222101 has 16 divisors (see below), whose sum is σ = 27294136890944. Its totient is φ = 13021080113664.

The previous prime is 20001010222099. The next prime is 20001010222129. The reversal of 20001010222101 is 10122201010002.

It is not a de Polignac number, because 20001010222101 - 2¹ = 20001010222099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001010220101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16270876 + ... + 17456901.

It is an arithmetic number, because the mean of its divisors is an integer number (1705883555684).

Almost surely, 2^{20001010222101} is an apocalyptic number.

It is an amenable number.

20001010222101 is a deficient number, since it is larger than the sum of its proper divisors (7293126668843).

20001010222101 is a wasteful number, since it uses less digits than its factorization.

20001010222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33732420.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001010222101 its reverse (10122201010002), we get a palindrome (30123211232103).

The spelling of 20001010222101 in words is "twenty trillion, one billion, ten million, two hundred twenty-two thousand, one hundred one".