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1100100121 is a prime number
BaseRepresentation
bin100000110010010…
…0011001000011001
32211200000212122221
41001210203020121
54223111200441
6301054544041
736155460661
oct10144431031
92750025587
101100100121
11514a8355a
12268508021
13146bb7423
14a61671a1
15668a58d1
hex41923219

1100100121 has 2 divisors, whose sum is σ = 1100100122. Its totient is φ = 1100100120.

The previous prime is 1100100091. The next prime is 1100100137. The reversal of 1100100121 is 1210010011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019908096 + 80192025 = 31936^2 + 8955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100100121 - 27 = 1100099993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100100191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550050060 + 550050061.

It is an arithmetic number, because the mean of its divisors is an integer number (550050061).

Almost surely, 21100100121 is an apocalyptic number.

It is an amenable number.

1100100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100100121 is an equidigital number, since it uses as much as digits as its factorization.

1100100121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1100100121 is about 33167.7572500765. The cubic root of 1100100121 is about 1032.3114335721.

Adding to 1100100121 its reverse (1210010011), we get a palindrome (2310110132).

The spelling of 1100100121 in words is "one billion, one hundred million, one hundred thousand, one hundred twenty-one".