222151 has 2 divisors, whose sum is σ = 222152. Its totient is φ = 222150.

The previous prime is 222149. The next prime is 222161. The reversal of 222151 is 151222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222151 - 2¹ = 222149 is a prime.

Together with 222149, it forms a pair of twin primes.

It is a Chen prime.

222151 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111075 + 111076.

It is an arithmetic number, because the mean of its divisors is an integer number (111076).

2²²²¹⁵¹ is an apocalyptic number.

222151 is a deficient number, since it is larger than the sum of its proper divisors (1).

222151 is an equidigital number, since it uses as much as digits as its factorization.

222151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 13.

The square root of 222151 is about 471.3289721628. The cubic root of 222151 is about 60.5642147680.

Subtracting from 222151 its product of digits (40), we obtain a triangular number (222111 = T₆₆₆).

Adding to 222151 its reverse (151222), we get a palindrome (373373).

It can be divided in two parts, 222 and 151, that added together give a palindrome (373).

The spelling of 222151 in words is "two hundred twenty-two thousand, one hundred fifty-one".