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100100101 = 881113621
BaseRepresentation
bin1011111011101…
…10100000000101
320222100121112011
411331312200011
5201111200401
613533254221
72323560013
oct575664005
9228317464
10100100101
115155a762
1229634371
131797a23a
14d4198b3
158bc4451
hex5f76805

100100101 has 4 divisors (see below), whose sum is σ = 100214604. Its totient is φ = 99985600.

The previous prime is 100100089. The next prime is 100100107. The reversal of 100100101 is 101001001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32433025 + 67667076 = 5695^2 + 8226^2 .

It is a cyclic number.

It is not a de Polignac number, because 100100101 - 25 = 100100069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100107) 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, 55930 + ... + 57691.

It is an arithmetic number, because the mean of its divisors is an integer number (25053651).

Almost surely, 2100100101 is an apocalyptic number.

It is an amenable number.

100100101 is a deficient number, since it is larger than the sum of its proper divisors (114503).

100100101 is an equidigital number, since it uses as much as digits as its factorization.

100100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114502.

The product of its (nonzero) digits is 1, while the sum is 4.

The square root of 100100101 is about 10005.0037981002. The cubic root of 100100101 is about 464.3137076072.

Adding to 100100101 its reverse (101001001), we get a palindrome (201101102).

The spelling of 100100101 in words is "one hundred million, one hundred thousand, one hundred one".

Divisors: 1 881 113621 100100101