221203214144 has 28 divisors (see below), whose sum is σ = 478854686688. Its totient is φ = 100546915200.

The previous prime is 221203214093. The next prime is 221203214153. The reversal of 221203214144 is 441412302122.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 157103852 + ... + 157105259.

It is an arithmetic number, because the mean of its divisors is an integer number (17101953096).

Almost surely, 2^221203214144 is an apocalyptic number.

It is an amenable number.

221203214144 is an abundant number, since it is smaller than the sum of its proper divisors (257651472544).

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

221203214144 is a wasteful number, since it uses less digits than its factorization.

221203214144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314209134 (or 314209124 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 221203214144 its reverse (441412302122), we get a palindrome (662615516266).

The spelling of 221203214144 in words is "two hundred twenty-one billion, two hundred three million, two hundred fourteen thousand, one hundred forty-four".