200122100001 has 24 divisors (see below), whose sum is σ = 302115875880. Its totient is φ = 127486227456.

The previous prime is 200122099997. The next prime is 200122100011. The reversal of 200122100001 is 100001221002.

It can be written as a sum of positive squares in 4 ways, for example, as 1606406400 + 198515693601 = 40080^2 + 445551^2 .

It is not a de Polignac number, because 200122100001 - 2² = 200122099997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (200122100011) 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 23 ways as a sum of consecutive naturals, for example, 3927010 + ... + 3977643.

It is an arithmetic number, because the mean of its divisors is an integer number (12588161495).

Almost surely, 2^200122100001 is an apocalyptic number.

It is an amenable number.

200122100001 is a deficient number, since it is larger than the sum of its proper divisors (101993775879).

200122100001 is a wasteful number, since it uses less digits than its factorization.

200122100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904785 (or 7904782 counting only the distinct ones).

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

Adding to 200122100001 its reverse (100001221002), we get a palindrome (300123321003).

The spelling of 200122100001 in words is "two hundred billion, one hundred twenty-two million, one hundred thousand, one".