221144113 has 4 divisors (see below), whose sum is σ = 222832368. Its totient is φ = 219455860.

The previous prime is 221144107. The next prime is 221144117. The reversal of 221144113 is 311441122.

221144113 = T₃₂₂ + T₃₂₃ + ... + T₁₁₀₇.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221144113 - 2¹³ = 221135921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221144117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843931 + ... + 844192.

It is an arithmetic number, because the mean of its divisors is an integer number (55708092).

Almost surely, 2^221144113 is an apocalyptic number.

It is an amenable number.

221144113 is a deficient number, since it is larger than the sum of its proper divisors (1688255).

221144113 is a wasteful number, since it uses less digits than its factorization.

221144113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688254.

The product of its digits is 192, while the sum is 19.

The square root of 221144113 is about 14870.9150021107. The cubic root of 221144113 is about 604.7257487035.

Adding to 221144113 its reverse (311441122), we get a palindrome (532585235).

The spelling of 221144113 in words is "two hundred twenty-one million, one hundred forty-four thousand, one hundred thirteen".