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100101001001 = 590931693957
BaseRepresentation
bin101110100111001111…
…1000000111100101001
3100120101012200201120112
41131032133000330221
53120001324013001
6113552531504105
710142411320031
oct1351637007451
9316335621515
10100101001001
11394a8450701
1217497758035
139593713a51
144bb86328c1
15290d03acbb
hex174e7c0f29

100101001001 has 4 divisors (see below), whose sum is σ = 100102754052. Its totient is φ = 100099247952.

The previous prime is 100101000977. The next prime is 100101001027. The reversal of 100101001001 is 100100101001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100100101001 = 472129789383.

It can be written as a sum of positive squares in 2 ways, for example, as 86341945600 + 13759055401 = 293840^2 + 117299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-100101001001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100101003001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787886 + ... + 906071.

It is an arithmetic number, because the mean of its divisors is an integer number (25025688513).

Almost surely, 2100101001001 is an apocalyptic number.

It is an amenable number.

100101001001 is a deficient number, since it is larger than the sum of its proper divisors (1753051).

100101001001 is an equidigital number, since it uses as much as digits as its factorization.

100101001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753050.

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 100101001001 its reverse (100100101001), we get a palindrome (200201102002).

The spelling of 100101001001 in words is "one hundred billion, one hundred one million, one thousand, one".

Divisors: 1 59093 1693957 100101001001