221434031111 has 12 divisors (see below), whose sum is σ = 227962420632. Its totient is φ = 215015793408.

The previous prime is 221434031083. The next prime is 221434031213. The reversal of 221434031111 is 111130434122.

It is not a de Polignac number, because 221434031111 - 2³⁰ = 220360289287 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 (221434031011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276656 + ... + 720698.

It is an arithmetic number, because the mean of its divisors is an integer number (18996868386).

Almost surely, 2^221434031111 is an apocalyptic number.

221434031111 is a deficient number, since it is larger than the sum of its proper divisors (6528389521).

221434031111 is an frugal number, since it uses more digits than its factorization.

221434031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444290 (or 444193 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221434031111 its reverse (111130434122), we get a palindrome (332564465233).

The spelling of 221434031111 in words is "two hundred twenty-one billion, four hundred thirty-four million, thirty-one thousand, one hundred eleven".