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101021311223 = 7191073970729
BaseRepresentation
bin101111000010101010…
…1101110000011110111
3100122202100102022212022
41132011111232003313
53123342423424343
6114224125143355
710204254656150
oct1360525560367
9318670368768
10101021311223
113992a995368
12176b39bab5b
1396ac29bb01
144c64958927
152963c2a568
hex178556e0f7

101021311223 has 16 divisors (see below), whose sum is σ = 121542432000. Its totient is φ = 82023544512.

The previous prime is 101021311201. The next prime is 101021311273. The reversal of 101021311223 is 322113120101.

It is not a de Polignac number, because 101021311223 - 230 = 99947569399 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 (101021311273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392923 + ... + 1463651.

It is an arithmetic number, because the mean of its divisors is an integer number (7596402000).

Almost surely, 2101021311223 is an apocalyptic number.

101021311223 is a deficient number, since it is larger than the sum of its proper divisors (20521120777).

101021311223 is a wasteful number, since it uses less digits than its factorization.

101021311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81494.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101021311223 its reverse (322113120101), we get a palindrome (423134431324).

The spelling of 101021311223 in words is "one hundred one billion, twenty-one million, three hundred eleven thousand, two hundred twenty-three".

Divisors: 1 7 19 133 10739 70729 75173 204041 495103 1343851 1428287 9406957 759558731 5316911117 14431615889 101021311223