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21112021210210 = 257301600303003
BaseRepresentation
bin1001100110011100001101…
…00001100101010001100010
32202202021211001120000200021
410303032012201211101202
510231344404412211320
6112522421215544054
74306202365242340
oct463160641452142
982667731500607
1021112021210210
1167aa6156471a7
12244b79922b02a
13ba1b1673ba38
1452db820a4990
1526928ad96daa
hex133386865462

21112021210210 has 16 divisors (see below), whose sum is σ = 43430443632576. Its totient is φ = 7238407272048.

The previous prime is 21112021210201. The next prime is 21112021210213. The reversal of 21112021210210 is 1201212021112.

It is not an unprimeable number, because it can be changed into a prime (21112021210213) 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, 150800151432 + ... + 150800151571.

It is an arithmetic number, because the mean of its divisors is an integer number (2714402727036).

Almost surely, 221112021210210 is an apocalyptic number.

21112021210210 is an abundant number, since it is smaller than the sum of its proper divisors (22318422422366).

21112021210210 is a wasteful number, since it uses less digits than its factorization.

21112021210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301600303017.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112021210210 its reverse (1201212021112), we get a palindrome (22313233231322).

The spelling of 21112021210210 in words is "twenty-one trillion, one hundred twelve billion, twenty-one million, two hundred ten thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 35 70 301600303003 603200606006 1508001515015 2111202121021 3016003030030 4222404242042 10556010605105 21112021210210