Base | Representation |
---|---|
bin | 1001101001101001011011… |
… | …10001000011010110001100 |
3 | 2210010211012200201121122012 |
4 | 10310310231301003112030 |
5 | 10240201032004234040 |
6 | 113045202240240352 |
7 | 4320152634125651 |
oct | 464645561032614 |
9 | 83124180647565 |
10 | 21222201243020 |
11 | 6842315381658 |
12 | 24690083100b8 |
13 | bac32532171b |
14 | 53523514dc28 |
15 | 26c088ba2865 |
hex | 134d2dc4358c |
21222201243020 has 48 divisors (see below), whose sum is σ = 45546219468288. Its totient is φ = 8302539595200.
The previous prime is 21222201242999. The next prime is 21222201243029. The reversal of 21222201243020 is 2034210222212.
It is not an unprimeable number, because it can be changed into a prime (21222201243029) 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, 6415802 + ... + 9143681.
It is an arithmetic number, because the mean of its divisors is an integer number (948879572256).
Almost surely, 221222201243020 is an apocalyptic number.
21222201243020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
21222201243020 is an abundant number, since it is smaller than the sum of its proper divisors (24324018225268).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21222201243020 is a wasteful number, since it uses less digits than its factorization.
21222201243020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15560990 (or 15560988 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 23.
Adding to 21222201243020 its reverse (2034210222212), we get a palindrome (23256411465232).
The spelling of 21222201243020 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred one million, two hundred forty-three thousand, twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •