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1222622081 is a prime number
BaseRepresentation
bin100100011011111…
…1011101110000001
310011012120122012022
41020313323232001
510000442401311
6321153011225
742204054602
oct11067735601
93135518168
101222622081
1157815807a
122a1553b15
131663b5225
14b853bda9
15725085db
hex48dfbb81

1222622081 has 2 divisors, whose sum is σ = 1222622082. Its totient is φ = 1222622080.

The previous prime is 1222622041. The next prime is 1222622101. The reversal of 1222622081 is 1802262221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887146225 + 335475856 = 29785^2 + 18316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222622081 - 226 = 1155513217 is a prime.

It is a super-2 number, since 2×12226220812 = 2989609505897541122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222622081.

It is not a weakly prime, because it can be changed into another prime (1222622021) 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, 611311040 + 611311041.

It is an arithmetic number, because the mean of its divisors is an integer number (611311041).

Almost surely, 21222622081 is an apocalyptic number.

It is an amenable number.

1222622081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222622081 is an equidigital number, since it uses as much as digits as its factorization.

1222622081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1222622081 is about 34966.0132271324. The cubic root of 1222622081 is about 1069.2946937182.

The spelling of 1222622081 in words is "one billion, two hundred twenty-two million, six hundred twenty-two thousand, eighty-one".