Base | Representation |
---|---|
bin | 10011100100010011… |
… | …001101101011100011 |
3 | 2000020020020020022210 |
4 | 103210103031223203 |
5 | 321012042024303 |
6 | 13352451333203 |
7 | 1342435666344 |
oct | 234423155343 |
9 | 60206206283 |
10 | 21010111203 |
11 | 8a01729574 |
12 | 40a42b1203 |
13 | 1c9aa45183 |
14 | 10345060cb |
15 | 82e798203 |
hex | 4e44cdae3 |
21010111203 has 16 divisors (see below), whose sum is σ = 28307286432. Its totient is φ = 13860000000.
The previous prime is 21010111201. The next prime is 21010111207. The reversal of 21010111203 is 30211101012.
It is not a de Polignac number, because 21010111203 - 21 = 21010111201 is a prime.
It is a super-2 number, since 2×210101112032 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (21010111201) 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, 526453 + ... + 564953.
It is an arithmetic number, because the mean of its divisors is an integer number (1769205402).
Almost surely, 221010111203 is an apocalyptic number.
21010111203 is a deficient number, since it is larger than the sum of its proper divisors (7297175229).
21010111203 is a wasteful number, since it uses less digits than its factorization.
21010111203 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40406.
The product of its (nonzero) digits is 12, while the sum is 12.
Adding to 21010111203 its reverse (30211101012), we get a palindrome (51221212215).
The spelling of 21010111203 in words is "twenty-one billion, ten million, one hundred eleven thousand, two hundred three".
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