200100021011221 has 8 divisors (see below), whose sum is σ = 201871866323160. Its totient is φ = 198328194097152.

The previous prime is 200100021011197. The next prime is 200100021011251. The reversal of 200100021011221 is 122110120001002.

It can be written as a sum of positive squares in 4 ways, for example, as 13862441632900 + 186237579378321 = 3723230^2 + 13646889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200100021011221 - 2¹¹ = 200100021009173 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 (200100021011251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17727061 + ... + 26729173.

It is an arithmetic number, because the mean of its divisors is an integer number (25233983290395).

Almost surely, 2^{200100021011221} is an apocalyptic number.

It is an amenable number.

200100021011221 is a deficient number, since it is larger than the sum of its proper divisors (1771845311939).

200100021011221 is a wasteful number, since it uses less digits than its factorization.

200100021011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9198935.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200100021011221 its reverse (122110120001002), we get a palindrome (322210141012223).

The spelling of 200100021011221 in words is "two hundred trillion, one hundred billion, twenty-one million, eleven thousand, two hundred twenty-one".