20010122202101 has 4 divisors (see below), whose sum is σ = 20655610015104. Its totient is φ = 19364634389100.

The previous prime is 20010122202089. The next prime is 20010122202173. The reversal of 20010122202101 is 10120222101002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20010122202101 - 2¹⁴ = 20010122185717 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 (20010122202001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322743906455 + ... + 322743906516.

It is an arithmetic number, because the mean of its divisors is an integer number (5163902503776).

Almost surely, 2^{20010122202101} is an apocalyptic number.

It is an amenable number.

20010122202101 is a deficient number, since it is larger than the sum of its proper divisors (645487813003).

20010122202101 is an equidigital number, since it uses as much as digits as its factorization.

20010122202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645487813002.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20010122202101 its reverse (10120222101002), we get a palindrome (30130344303103).

The spelling of 20010122202101 in words is "twenty trillion, ten billion, one hundred twenty-two million, two hundred two thousand, one hundred one".