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12222047 is a prime number
BaseRepresentation
bin101110100111…
…111001011111
3211222221111102
4232213321133
511112101142
61113543315
7205612535
oct56477137
924887442
1012222047
116998672
124114b3b
1326bc0a6
1418a2155
151116532
hexba7e5f

12222047 has 2 divisors, whose sum is σ = 12222048. Its totient is φ = 12222046.

The previous prime is 12222013. The next prime is 12222053. The reversal of 12222047 is 74022221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12222047 - 216 = 12156511 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 (12222547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111023 + 6111024.

It is an arithmetic number, because the mean of its divisors is an integer number (6111024).

Almost surely, 212222047 is an apocalyptic number.

12222047 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222047 is an equidigital number, since it uses as much as digits as its factorization.

12222047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12222047 is about 3496.0044336356. The cubic root of 12222047 is about 230.3463402136.

Adding to 12222047 its reverse (74022221), we get a palindrome (86244268).

The spelling of 12222047 in words is "twelve million, two hundred twenty-two thousand, forty-seven".