200001222101 has 4 divisors (see below), whose sum is σ = 200002389132. Its totient is φ = 200000055072.

The previous prime is 200001222059. The next prime is 200001222119. The reversal of 200001222101 is 101222100002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 101222100002 = 2 ⋅50611050001.

It can be written as a sum of positive squares in 2 ways, for example, as 102672821476 + 97328400625 = 320426^2 + 311975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200001222101 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 (200001222121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270470 + ... + 687863.

It is an arithmetic number, because the mean of its divisors is an integer number (50000597283).

Almost surely, 2^200001222101 is an apocalyptic number.

It is an amenable number.

200001222101 is a deficient number, since it is larger than the sum of its proper divisors (1167031).

200001222101 is an equidigital number, since it uses as much as digits as its factorization.

200001222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167030.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200001222101 its reverse (101222100002), we get a palindrome (301223322103).

The spelling of 200001222101 in words is "two hundred billion, one million, two hundred twenty-two thousand, one hundred one".