200100122212221 has 48 divisors (see below), whose sum is σ = 360388159193088. Its totient is φ = 103938108026400.

The previous prime is 200100122212201. The next prime is 200100122212231. The reversal of 200100122212221 is 122212221001002.

It is a happy number.

200100122212221 is a `hidden beast` number, since 200 + 10 + 0 + 1 + 22 + 212 + 221 = 666.

It is not a de Polignac number, because 200100122212221 - 2¹³ = 200100122204029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200100122212194 and 200100122212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200100122212201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6693021 + ... + 21094946.

It is an arithmetic number, because the mean of its divisors is an integer number (7508086649856).

Almost surely, 2^{200100122212221} is an apocalyptic number.

200100122212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200100122212221 is a deficient number, since it is larger than the sum of its proper divisors (160288036980867).

200100122212221 is a wasteful number, since it uses less digits than its factorization.

200100122212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27798382 (or 27798379 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 200100122212221 its reverse (122212221001002), we get a palindrome (322312343213223).

The spelling of 200100122212221 in words is "two hundred trillion, one hundred billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-one".