221211140144 has 20 divisors (see below), whose sum is σ = 428659066296. Its totient is φ = 110589445632.

The previous prime is 221211140123. The next prime is 221211140149. The reversal of 221211140144 is 441041112122.

It is not an unprimeable number, because it can be changed into a prime (221211140149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894209 + ... + 1114464.

Almost surely, 2^221211140144 is an apocalyptic number.

It is an amenable number.

221211140144 is a deficient number, since it is larger than the sum of its proper divisors (207447926152).

221211140144 is a wasteful number, since it uses less digits than its factorization.

221211140144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015564 (or 2015558 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221211140144 its reverse (441041112122), we get a palindrome (662252252266).

The spelling of 221211140144 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred forty thousand, one hundred forty-four".