221214204111 has 8 divisors (see below), whose sum is σ = 294965309440. Its totient is φ = 147469617432.

The previous prime is 221214204109. The next prime is 221214204149. The reversal of 221214204111 is 111402412122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221214204111 - 2¹ = 221214204109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221214204311) 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, 1549921 + ... + 1686618.

It is an arithmetic number, because the mean of its divisors is an integer number (36870663680).

Almost surely, 2^221214204111 is an apocalyptic number.

221214204111 is a deficient number, since it is larger than the sum of its proper divisors (73751105329).

221214204111 is a wasteful number, since it uses less digits than its factorization.

221214204111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259325.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221214204111 its reverse (111402412122), we get a palindrome (332616616233).

The spelling of 221214204111 in words is "two hundred twenty-one billion, two hundred fourteen million, two hundred four thousand, one hundred eleven".