221211044411 has 8 divisors (see below), whose sum is σ = 253926336000. Its totient is φ = 188774181288.

The previous prime is 221211044389. The next prime is 221211044441. The reversal of 221211044411 is 114440112122.

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

It is a de Polignac number, because none of the positive numbers 2^k-221211044411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221211044441) 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, 69605411 + ... + 69608588.

It is an arithmetic number, because the mean of its divisors is an integer number (31740792000).

Almost surely, 2^221211044411 is an apocalyptic number.

221211044411 is a deficient number, since it is larger than the sum of its proper divisors (32715291589).

221211044411 is a wasteful number, since it uses less digits than its factorization.

221211044411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139214233.

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

Adding to 221211044411 its reverse (114440112122), we get a palindrome (335651156533).

The spelling of 221211044411 in words is "two hundred twenty-one billion, two hundred eleven million, forty-four thousand, four hundred eleven".