221440334011 has 16 divisors (see below), whose sum is σ = 247963822848. Its totient is φ = 196368768000.

The previous prime is 221440333969. The next prime is 221440334033. The reversal of 221440334011 is 110433044122.

It is a cyclic number.

It is not a de Polignac number, because 221440334011 - 2¹⁷ = 221440202939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221440338011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950190 + ... + 2060611.

It is an arithmetic number, because the mean of its divisors is an integer number (15497738928).

Almost surely, 2^221440334011 is an apocalyptic number.

221440334011 is a deficient number, since it is larger than the sum of its proper divisors (26523488837).

221440334011 is a wasteful number, since it uses less digits than its factorization.

221440334011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010982.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221440334011 its reverse (110433044122), we get a palindrome (331873378133).

The spelling of 221440334011 in words is "two hundred twenty-one billion, four hundred forty million, three hundred thirty-four thousand, eleven".