221211210214444 has 96 divisors (see below), whose sum is σ = 405698866235712. Its totient is φ = 105444937728000.

The previous prime is 221211210214429. The next prime is 221211210214447. The reversal of 221211210214444 is 444412012112122.

It is not an unprimeable number, because it can be changed into a prime (221211210214447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16226151052 + ... + 16226164684.

It is an arithmetic number, because the mean of its divisors is an integer number (4226029856622).

Almost surely, 2^{221211210214444} is an apocalyptic number.

It is an amenable number.

221211210214444 is a deficient number, since it is larger than the sum of its proper divisors (184487656021268).

221211210214444 is a wasteful number, since it uses less digits than its factorization.

221211210214444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24227 (or 24225 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

Adding to 221211210214444 its reverse (444412012112122), we get a palindrome (665623222326566).

The spelling of 221211210214444 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred ten million, two hundred fourteen thousand, four hundred forty-four".