221112141 has 4 divisors (see below), whose sum is σ = 294816192. Its totient is φ = 147408092.

The previous prime is 221112121. The next prime is 221112161. The reversal of 221112141 is 141211122.

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 an interprime number because it is at equal distance from previous prime (221112121) and next prime (221112161).

It is a cyclic number.

It is not a de Polignac number, because 221112141 - 2⁹ = 221111629 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221112141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36852021 + ... + 36852026.

It is an arithmetic number, because the mean of its divisors is an integer number (73704048).

Almost surely, 2^221112141 is an apocalyptic number.

It is an amenable number.

221112141 is a deficient number, since it is larger than the sum of its proper divisors (73704051).

221112141 is an equidigital number, since it uses as much as digits as its factorization.

221112141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73704050.

The product of its digits is 32, while the sum is 15.

The square root of 221112141 is about 14869.8399789641. The cubic root of 221112141 is about 604.6966044754.

Adding to 221112141 its reverse (141211122), we get a palindrome (362323263).

The spelling of 221112141 in words is "two hundred twenty-one million, one hundred twelve thousand, one hundred forty-one".