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BaseRepresentation
bin11101110101110111
320012200002
4131311313
512402411
62341515
71016234
oct356567
9205602
10122231
118391a
125a89b
1343835
143278b
152633b
hex1dd77

122231 has 2 divisors, whose sum is σ = 122232. Its totient is φ = 122230.

The previous prime is 122219. The next prime is 122251. The reversal of 122231 is 132221.

It is a happy number.

122231 is nontrivially palindromic in base 2.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122231 - 26 = 122167 is a prime.

It is a super-2 number, since 2×1222312 = 29880834722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122201) 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 as a sum of consecutive naturals, namely, 61115 + 61116.

It is an arithmetic number, because the mean of its divisors is an integer number (61116).

2122231 is an apocalyptic number.

122231 is a deficient number, since it is larger than the sum of its proper divisors (1).

122231 is an equidigital number, since it uses as much as digits as its factorization.

122231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 11.

The square root of 122231 is about 349.6155030888. The cubic root of 122231 is about 49.6280397734.

Adding to 122231 its reverse (132221), we get a palindrome (254452).

It can be divided in two parts, 122 and 231, that multiplied together give a palindrome (28182).

The spelling of 122231 in words is "one hundred twenty-two thousand, two hundred thirty-one".