20202222122101 has 4 divisors (see below), whose sum is σ = 20202265532812. Its totient is φ = 20202178711392.

The previous prime is 20202222122099. The next prime is 20202222122113. The reversal of 20202222122101 is 10122122220202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13772188988100 + 6430033134001 = 3711090^2 + 2535751^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202222122101 - 2¹ = 20202222122099 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 (20202222129101) 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, 20999646 + ... + 21940591.

It is an arithmetic number, because the mean of its divisors is an integer number (5050566383203).

Almost surely, 2^{20202222122101} is an apocalyptic number.

It is an amenable number.

20202222122101 is a deficient number, since it is larger than the sum of its proper divisors (43410711).

20202222122101 is an equidigital number, since it uses as much as digits as its factorization.

20202222122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43410710.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20202222122101 its reverse (10122122220202), we get a palindrome (30324344342303).

The spelling of 20202222122101 in words is "twenty trillion, two hundred two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred one".