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1222622101 is a prime number
BaseRepresentation
bin100100011011111…
…1011101110010101
310011012120122020001
41020313323232111
510000442401401
6321153011301
742204054631
oct11067735625
93135518201
101222622101
11578158098
122a1553b31
131663b523c
14b853bdc1
1572508601
hex48dfbb95

1222622101 has 2 divisors, whose sum is σ = 1222622102. Its totient is φ = 1222622100.

The previous prime is 1222622081. The next prime is 1222622111. The reversal of 1222622101 is 1012262221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216195876 + 6426225 = 34874^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222622101 - 27 = 1222621973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222622111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611311050 + 611311051.

It is an arithmetic number, because the mean of its divisors is an integer number (611311051).

Almost surely, 21222622101 is an apocalyptic number.

It is an amenable number.

1222622101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222622101 is an equidigital number, since it uses as much as digits as its factorization.

1222622101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1222622101 is about 34966.0135131244. The cubic root of 1222622101 is about 1069.2946995489.

Adding to 1222622101 its reverse (1012262221), we get a palindrome (2234884322).

The spelling of 1222622101 in words is "one billion, two hundred twenty-two million, six hundred twenty-two thousand, one hundred one".