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122000917 is a prime number
BaseRepresentation
bin1110100010110…
…01011000010101
322111120021210111
413101121120111
5222213012132
620034523021
73010663543
oct721313025
9274507714
10122000917
1162959105
1234a36471
131c3778bc
14122bad93
15aa9d647
hex7459615

122000917 has 2 divisors, whose sum is σ = 122000918. Its totient is φ = 122000916.

The previous prime is 122000909. The next prime is 122000971. The reversal of 122000917 is 719000221.

Together with next prime (122000971) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66438801 + 55562116 = 8151^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 122000917 - 23 = 122000909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122000317) 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, 61000458 + 61000459.

It is an arithmetic number, because the mean of its divisors is an integer number (61000459).

Almost surely, 2122000917 is an apocalyptic number.

It is an amenable number.

122000917 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000917 is an equidigital number, since it uses as much as digits as its factorization.

122000917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 122000917 is about 11045.4025277488. The cubic root of 122000917 is about 495.9688090102.

The spelling of 122000917 in words is "one hundred twenty-two million, nine hundred seventeen", and thus it is an aban number.