221011102212 has 48 divisors (see below), whose sum is σ = 525408811200. Its totient is φ = 72294249088.

The previous prime is 221011102177. The next prime is 221011102223. The reversal of 221011102212 is 212201110122.

It is a super-3 number, since 3×221011102212³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 221011102191 and 221011102200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596223 + ... + 893030.

It is an arithmetic number, because the mean of its divisors is an integer number (10946016900).

Almost surely, 2^221011102212 is an apocalyptic number.

It is an amenable number.

221011102212 is an abundant number, since it is smaller than the sum of its proper divisors (304397708988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221011102212 is a wasteful number, since it uses less digits than its factorization.

221011102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489492 (or 1489490 counting only the distinct ones).

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

Adding to 221011102212 its reverse (212201110122), we get a palindrome (433212212334).

The spelling of 221011102212 in words is "two hundred twenty-one billion, eleven million, one hundred two thousand, two hundred twelve".