211100202221 has 8 divisors (see below), whose sum is σ = 222230440800. Its totient is φ = 199971933840.

The previous prime is 211100202217. The next prime is 211100202283. The reversal of 211100202221 is 122202001112.

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 211100202221 - 2² = 211100202217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211100202196 and 211100202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100202121) 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, 270026 + ... + 703643.

It is an arithmetic number, because the mean of its divisors is an integer number (27778805100).

Almost surely, 2^211100202221 is an apocalyptic number.

It is an amenable number.

211100202221 is a deficient number, since it is larger than the sum of its proper divisors (11130238579).

211100202221 is a wasteful number, since it uses less digits than its factorization.

211100202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985099.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211100202221 its reverse (122202001112), we get a palindrome (333302203333).

The spelling of 211100202221 in words is "two hundred eleven billion, one hundred million, two hundred two thousand, two hundred twenty-one".