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21321033104 = 247459741411
BaseRepresentation
bin10011110110110101…
…010010010110010000
32001000220021200222202
4103312311102112100
5322131141024404
613443355422332
71353232535240
oct236665222620
961026250882
1021321033104
119051192818
1241704549a8
13201a298327
14106391db20
1584bc1321e
hex4f6d52590

21321033104 has 40 divisors (see below), whose sum is σ = 47222269248. Its totient is φ = 9135377280.

The previous prime is 21321033101. The next prime is 21321033109. The reversal of 21321033104 is 40133012312.

It is not an unprimeable number, because it can be changed into a prime (21321033101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494159 + ... + 535569.

Almost surely, 221321033104 is an apocalyptic number.

It is an amenable number.

21321033104 is an abundant number, since it is smaller than the sum of its proper divisors (25901236144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21321033104 is a wasteful number, since it uses less digits than its factorization.

21321033104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46023 (or 46017 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21321033104 its reverse (40133012312), we get a palindrome (61454045416).

The spelling of 21321033104 in words is "twenty-one billion, three hundred twenty-one million, thirty-three thousand, one hundred four".

Divisors: 1 2 4 7 8 14 16 28 56 112 4597 9194 18388 32179 36776 41411 64358 73552 82822 128716 165644 257432 289877 331288 514864 579754 662576 1159508 2319016 4638032 190366367 380732734 761465468 1332564569 1522930936 2665129138 3045861872 5330258276 10660516552 21321033104