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21010112 = 26328283
BaseRepresentation
bin101000000100…
…1011011000000
31110112102110022
41100021123000
520334310422
62030153012
7343403654
oct120113300
943472408
1021010112
1110950232
127052768
134478126
142b0ca64
151ca0342
hex14096c0

21010112 has 14 divisors (see below), whose sum is σ = 41692068. Its totient is φ = 10505024.

The previous prime is 21010111. The next prime is 21010127. The reversal of 21010112 is 21101012.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 21010112.

It is not an unprimeable number, because it can be changed into a prime (21010111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164078 + ... + 164205.

Almost surely, 221010112 is an apocalyptic number.

It is an amenable number.

21010112 is a deficient number, since it is larger than the sum of its proper divisors (20681956).

21010112 is an equidigital number, since it uses as much as digits as its factorization.

21010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328295 (or 328285 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 21010112 is about 4583.6788718234. The cubic root of 21010112 is about 275.9366934549.

Adding to 21010112 its reverse (21101012), we get a palindrome (42111124).

The spelling of 21010112 in words is "twenty-one million, ten thousand, one hundred twelve".

Divisors: 1 2 4 8 16 32 64 328283 656566 1313132 2626264 5252528 10505056 21010112