201100010221 has 4 divisors (see below), whose sum is σ = 219381829344. Its totient is φ = 182818191100.

The previous prime is 201100010203. The next prime is 201100010291. The reversal of 201100010221 is 122010001102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201100010221 - 2¹¹ = 201100008173 is a prime.

It is a super-2 number, since 2×201100010221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201100010198 and 201100010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100010291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9140909545 + ... + 9140909566.

It is an arithmetic number, because the mean of its divisors is an integer number (54845457336).

Almost surely, 2^201100010221 is an apocalyptic number.

It is an amenable number.

201100010221 is a deficient number, since it is larger than the sum of its proper divisors (18281819123).

201100010221 is a wasteful number, since it uses less digits than its factorization.

201100010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18281819122.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201100010221 its reverse (122010001102), we get a palindrome (323110011323).

The spelling of 201100010221 in words is "two hundred one billion, one hundred million, ten thousand, two hundred twenty-one".