Base | Representation |
---|---|
bin | 1001101001011000010010… |
… | …11100101110011100000010 |
3 | 2210002221110120201122202120 |
4 | 10310230021130232130002 |
5 | 10240023212003001010 |
6 | 113041041340425110 |
7 | 4316405651632563 |
oct | 464541134563402 |
9 | 83087416648676 |
10 | 21213002000130 |
11 | 6839424675286 |
12 | 246727b548196 |
13 | bab4ba4c0935 |
14 | 534a014b216a |
15 | 26bbeb26ae70 |
hex | 134b0972e702 |
21213002000130 has 32 divisors (see below), whose sum is σ = 52095186310464. Its totient is φ = 5525247032256.
The previous prime is 21213002000123. The next prime is 21213002000137. The reversal of 21213002000130 is 3100020031212.
It is an interprime number because it is at equal distance from previous prime (21213002000123) and next prime (21213002000137).
It is a Harshad number since it is a multiple of its sum of digits (15).
It is not an unprimeable number, because it can be changed into a prime (21213002000137) 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, 8222092509 + ... + 8222095088.
It is an arithmetic number, because the mean of its divisors is an integer number (1627974572202).
Almost surely, 221213002000130 is an apocalyptic number.
21213002000130 is an abundant number, since it is smaller than the sum of its proper divisors (30882184310334).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21213002000130 is a wasteful number, since it uses less digits than its factorization.
21213002000130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16444187650.
The product of its (nonzero) digits is 72, while the sum is 15.
Adding to 21213002000130 its reverse (3100020031212), we get a palindrome (24313022031342).
The spelling of 21213002000130 in words is "twenty-one trillion, two hundred thirteen billion, two million, one hundred thirty", and thus it is an aban number.
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