Base | Representation |
---|---|
bin | 11000011101001111… |
… | …10100100111000101 |
3 | 1020220001211101111022 |
4 | 30032213310213011 |
5 | 203342314101041 |
6 | 10010522120525 |
7 | 643244021450 |
oct | 141647644705 |
9 | 36801741438 |
10 | 13130222021 |
11 | 5628739164 |
12 | 2665350145 |
13 | 1313367557 |
14 | 8c7b86497 |
15 | 51cac624b |
hex | 30e9f49c5 |
13130222021 has 16 divisors (see below), whose sum is σ = 15258384000. Its totient is φ = 11065792320.
The previous prime is 13130221987. The next prime is 13130222113. The reversal of 13130222021 is 12022203131.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13130222021 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13130225021) 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, 227855 + ... + 279603.
It is an arithmetic number, because the mean of its divisors is an integer number (953649000).
Almost surely, 213130222021 is an apocalyptic number.
It is an amenable number.
13130222021 is a deficient number, since it is larger than the sum of its proper divisors (2128161979).
13130222021 is an equidigital number, since it uses as much as digits as its factorization.
13130222021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 52364.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 13130222021 its reverse (12022203131), we get a palindrome (25152425152).
The spelling of 13130222021 in words is "thirteen billion, one hundred thirty million, two hundred twenty-two thousand, twenty-one".
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