221254141 has 2 divisors, whose sum is σ = 221254142. Its totient is φ = 221254140.

The previous prime is 221254139. The next prime is 221254151. The reversal of 221254141 is 141452122.

221254141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212314041 + 8940100 = 14571^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 221254141 - 2¹ = 221254139 is a prime.

Together with 221254139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221254151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110627070 + 110627071.

It is an arithmetic number, because the mean of its divisors is an integer number (110627071).

Almost surely, 2^221254141 is an apocalyptic number.

It is an amenable number.

221254141 is a deficient number, since it is larger than the sum of its proper divisors (1).

221254141 is an equidigital number, since it uses as much as digits as its factorization.

221254141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640, while the sum is 22.

The square root of 221254141 is about 14874.6139781844. The cubic root of 221254141 is about 604.8260237865.

The spelling of 221254141 in words is "two hundred twenty-one million, two hundred fifty-four thousand, one hundred forty-one".