221022102221212 has 24 divisors (see below), whose sum is σ = 387218572171200. Its totient is φ = 110388265468416.

The previous prime is 221022102221149. The next prime is 221022102221213. The reversal of 221022102221212 is 212122201220122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022102221213) 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, 16446964 + ... + 26693572.

It is an arithmetic number, because the mean of its divisors is an integer number (16134107173800).

Almost surely, 2^{221022102221212} is an apocalyptic number.

It is an amenable number.

221022102221212 is a deficient number, since it is larger than the sum of its proper divisors (166196469949988).

221022102221212 is a wasteful number, since it uses less digits than its factorization.

221022102221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10252605 (or 10252603 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221022102221212 its reverse (212122201220122), we get a palindrome (433144303441334).

The spelling of 221022102221212 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred two million, two hundred twenty-one thousand, two hundred twelve".