426182221 has 2 divisors, whose sum is σ = 426182222. Its totient is φ = 426182220.

The previous prime is 426182219. The next prime is 426182233. The reversal of 426182221 is 122281624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424813321 + 1368900 = 20611^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 426182221 - 2¹ = 426182219 is a prime.

Together with 426182219, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426182221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426182291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213091110 + 213091111.

It is an arithmetic number, because the mean of its divisors is an integer number (213091111).

Almost surely, 2^426182221 is an apocalyptic number.

It is an amenable number.

426182221 is a deficient number, since it is larger than the sum of its proper divisors (1).

426182221 is an equidigital number, since it uses as much as digits as its factorization.

426182221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 426182221 is about 20644.1812867452. The cubic root of 426182221 is about 752.5437896836.

The spelling of 426182221 in words is "four hundred twenty-six million, one hundred eighty-two thousand, two hundred twenty-one".