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12220237 is a prime number
BaseRepresentation
bin101110100111…
…011101001101
3211222212000101
4232213131031
511112021422
61113531101
7205604341
oct56473515
924885011
1012220237
116997277
124113a91
1326bb313
1418a1621
151115c27
hexba774d

12220237 has 2 divisors, whose sum is σ = 12220238. Its totient is φ = 12220236.

The previous prime is 12220217. The next prime is 12220253. The reversal of 12220237 is 73202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 5900041 = 2514^2 + 2429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12220237 is a 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 (12220217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110118 + 6110119.

It is an arithmetic number, because the mean of its divisors is an integer number (6110119).

Almost surely, 212220237 is an apocalyptic number.

It is an amenable number.

12220237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220237 is an equidigital number, since it uses as much as digits as its factorization.

12220237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 12220237 is about 3495.7455571022. The cubic root of 12220237 is about 230.3349687562.

Adding to 12220237 its reverse (73202221), we get a palindrome (85422458).

The spelling of 12220237 in words is "twelve million, two hundred twenty thousand, two hundred thirty-seven".