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101011010010101 = 1018036691244429
BaseRepresentation
bin10110111101111001110101…
…010111101011101111110101
3111020122120001222000102021122
4112331321311113223233311
5101214431022030310401
6554455452315553325
730163542664345142
oct2675716527535765
9436576058012248
10101011010010101
112a20458a887674
12b3b473aa5b845
1344493b3432459
141ad2d5d5b33c9
15ba27dc90121b
hex5bde755ebbf5

101011010010101 has 8 divisors (see below), whose sum is σ = 102011327926200. Its totient is φ = 100010696190400.

The previous prime is 101011010010077. The next prime is 101011010010103. The reversal of 101011010010101 is 101010010110101.

It can be written as a sum of positive squares in 4 ways, for example, as 76453583763076 + 24557426247025 = 8743774^2 + 4955545^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-101011010010101 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 (101011010010103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80548355 + ... + 81792783.

It is an arithmetic number, because the mean of its divisors is an integer number (12751415990775).

Almost surely, 2101011010010101 is an apocalyptic number.

It is an amenable number.

101011010010101 is a deficient number, since it is larger than the sum of its proper divisors (1000317916099).

101011010010101 is a wasteful number, since it uses less digits than its factorization.

101011010010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048199.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 101011010010101 its reverse (101010010110101), we get a palindrome (202021020120202).

The spelling of 101011010010101 in words is "one hundred one trillion, eleven billion, ten million, ten thousand, one hundred one".

Divisors: 1 101 803669 1244429 81170569 125687329 1000109010001 101011010010101