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21031222213303 = 47107105116092473
BaseRepresentation
bin1001100100000101101101…
…00001110111101010110111
32202110120021000222200222021
410302002312201313222313
510224033420341311203
6112421335441014011
74300312202142601
oct462026641675267
982416230880867
1021031222213303
1167793227249a5
122437ba9924307
13b9730ac157b3
14529cb9182171
1526710c69d5bd
hex1320b6877ab7

21031222213303 has 32 divisors (see below), whose sum is σ = 21722324843520. Its totient is φ = 20351082124800.

The previous prime is 21031222213297. The next prime is 21031222213319. The reversal of 21031222213303 is 30331222213012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-21031222213303 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 (21031222217303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8504334475 + ... + 8504336947.

It is an arithmetic number, because the mean of its divisors is an integer number (678822651360).

Almost surely, 221031222213303 is an apocalyptic number.

21031222213303 is a deficient number, since it is larger than the sum of its proper divisors (691102630217).

21031222213303 is a wasteful number, since it uses less digits than its factorization.

21031222213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21031222213303 its reverse (30331222213012), we get a palindrome (51362444426315).

The spelling of 21031222213303 in words is "twenty-one trillion, thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, three hundred three".

Divisors: 1 47 107 1051 1609 2473 5029 49397 75623 112457 116231 172163 264611 1691059 2599123 3979057 5285479 8091661 12436717 79479773 122158781 180943313 187015679 278106161 425759099 4181988907 8504335711 13070989567 20010677653 196553478629 447472813049 21031222213303