221010212211 has 16 divisors (see below), whose sum is σ = 301736354304. Its totient is φ = 143816720544.

The previous prime is 221010212207. The next prime is 221010212219. The reversal of 221010212211 is 112212010122.

It is not a de Polignac number, because 221010212211 - 2² = 221010212207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221010212219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384256 + ... + 767901.

It is an arithmetic number, because the mean of its divisors is an integer number (18858522144).

Almost surely, 2^221010212211 is an apocalyptic number.

221010212211 is a deficient number, since it is larger than the sum of its proper divisors (80726142093).

221010212211 is a wasteful number, since it uses less digits than its factorization.

221010212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153690.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221010212211 its reverse (112212010122), we get a palindrome (333222222333).

The spelling of 221010212211 in words is "two hundred twenty-one billion, ten million, two hundred twelve thousand, two hundred eleven".