211010221211 has 8 divisors (see below), whose sum is σ = 214014045024. Its totient is φ = 208024331200.

The previous prime is 211010221207. The next prime is 211010221217. The reversal of 211010221211 is 112122010112.

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 211010221211 - 2² = 211010221207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211010221217) 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, 4459751 + ... + 4506816.

It is an arithmetic number, because the mean of its divisors is an integer number (26751755628).

Almost surely, 2^211010221211 is an apocalyptic number.

211010221211 is a deficient number, since it is larger than the sum of its proper divisors (3003823813).

211010221211 is a wasteful number, since it uses less digits than its factorization.

211010221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8966901.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211010221211 its reverse (112122010112), we get a palindrome (323132231323).

The spelling of 211010221211 in words is "two hundred eleven billion, ten million, two hundred twenty-one thousand, two hundred eleven".