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111001012 = 2227750253
BaseRepresentation
bin1101001110110…
…11110110110100
321201212102202121
412213123312310
5211404013022
615003045324
72515331053
oct647336664
9251772677
10111001012
1157725781
1231210844
1319cc5b95
1410a5639a
159b292c7
hex69dbdb4

111001012 has 6 divisors (see below), whose sum is σ = 194251778. Its totient is φ = 55500504.

The previous prime is 111001003. The next prime is 111001019. The reversal of 111001012 is 210100111.

It can be written as a sum of positive squares in only one way, i.e., 108910096 + 2090916 = 10436^2 + 1446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111000986 and 111001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001019) 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, 13875123 + ... + 13875130.

Almost surely, 2111001012 is an apocalyptic number.

It is an amenable number.

111001012 is a deficient number, since it is larger than the sum of its proper divisors (83250766).

111001012 is a wasteful number, since it uses less digits than its factorization.

111001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27750257 (or 27750255 counting only the distinct ones).

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

The square root of 111001012 is about 10535.7017801379. The cubic root of 111001012 is about 480.5910138965.

Adding to 111001012 its reverse (210100111), we get a palindrome (321101123).

Subtracting 111001012 from its reverse (210100111), we obtain a palindrome (99099099).

The spelling of 111001012 in words is "one hundred eleven million, one thousand, twelve".

Divisors: 1 2 4 27750253 55500506 111001012