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1220130127 is a prime number
BaseRepresentation
bin100100010111001…
…1011010101001111
310011000220000212201
41020232123111033
54444323131002
6321023342331
742143635456
oct11056332517
93130800781
101220130127
11576805907
122a07519a7
13165a21bb8
14b808db9d
15721b5087
hex48b9b54f

1220130127 has 2 divisors, whose sum is σ = 1220130128. Its totient is φ = 1220130126.

The previous prime is 1220130097. The next prime is 1220130161. The reversal of 1220130127 is 7210310221.

It is a weak prime.

It is an emirp because it is prime and its reverse (7210310221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220130127 - 223 = 1211741519 is a prime.

It is a super-2 number, since 2×12201301272 = 2977435053626072258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220130187) 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, 610065063 + 610065064.

It is an arithmetic number, because the mean of its divisors is an integer number (610065064).

Almost surely, 21220130127 is an apocalyptic number.

1220130127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220130127 is an equidigital number, since it uses as much as digits as its factorization.

1220130127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1220130127 is about 34930.3611060636. The cubic root of 1220130127 is about 1068.5677191174.

Adding to 1220130127 its reverse (7210310221), we get a palindrome (8430440348).

The spelling of 1220130127 in words is "one billion, two hundred twenty million, one hundred thirty thousand, one hundred twenty-seven".