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1001101101001 = 19911717429347
BaseRepresentation
bin11101001000101100100…
…01101000011111001001
310112201000110100011002121
432210112101220133021
5112400223340213001
62043522142531241
7132220134646021
oct16442621503711
93481013304077
101001101101001
11356623522421
1214202a896b21
13735324436b1
143664c790a81
151b0932686a1
hexe9164687c9

1001101101001 has 8 divisors (see below), whose sum is σ = 1006219972800. Its totient is φ = 995983111728.

The previous prime is 1001101100983. The next prime is 1001101101023. The reversal of 1001101101001 is 1001011011001.

It is a happy number.

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 1001101101001 - 27 = 1001101100873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001101101101) 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 in 7 ways as a sum of consecutive naturals, for example, 2117010 + ... + 2546356.

It is an arithmetic number, because the mean of its divisors is an integer number (125777496600).

Almost surely, 21001101101001 is an apocalyptic number.

It is an amenable number.

1001101101001 is a deficient number, since it is larger than the sum of its proper divisors (5118871799).

1001101101001 is a wasteful number, since it uses less digits than its factorization.

1001101101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441263.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1001101101001 its reverse (1001011011001), we get a palindrome (2002112112002).

The spelling of 1001101101001 in words is "one trillion, one billion, one hundred one million, one hundred one thousand, one".

Divisors: 1 199 11717 429347 2331683 85440053 5030658799 1001101101001