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1123101001 = 11195373689
BaseRepresentation
bin100001011110001…
…0010100101001001
32220021022102221101
41002330102211021
54300003213001
6303235541401
736555125641
oct10274224511
92807272841
101123101001
11526a63450
1227415a861
1314b8ab709
14a9233521
15688eaa01
hex42f12949

1123101001 has 8 divisors (see below), whose sum is σ = 1289685600. Its totient is φ = 967263840.

The previous prime is 1123100989. The next prime is 1123101019. The reversal of 1123101001 is 1001013211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123101001 - 25 = 1123100969 is a prime.

It is a super-2 number, since 2×11231010012 = 2522711716894404002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123101041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2686636 + ... + 2687053.

It is an arithmetic number, because the mean of its divisors is an integer number (161210700).

Almost surely, 21123101001 is an apocalyptic number.

1123101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123101001 is a deficient number, since it is larger than the sum of its proper divisors (166584599).

1123101001 is a wasteful number, since it uses less digits than its factorization.

1123101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373719.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1123101001 is about 33512.6991004902. The cubic root of 1123101001 is about 1039.4563853390.

Adding to 1123101001 its reverse (1001013211), we get a palindrome (2124114212).

It can be divided in two parts, 112310 and 1001, that added together give a palindrome (113311).

The spelling of 1123101001 in words is "one billion, one hundred twenty-three million, one hundred one thousand, one".

Divisors: 1 11 19 209 5373689 59110579 102100091 1123101001