Base | Representation |
---|---|
bin | 111100101000111000… |
… | …1101101000011011011 |
3 | 110110010022210100201001 |
4 | 1321101301231003123 |
5 | 4113143034043341 |
6 | 135453412005431 |
7 | 12256666155613 |
oct | 1712161550333 |
9 | 413108710631 |
10 | 130221002971 |
11 | 502543a7a14 |
12 | 212a2900877 |
13 | c383903917 |
14 | 6434997a43 |
15 | 35c246ad31 |
hex | 1e51c6d0db |
130221002971 has 2 divisors, whose sum is σ = 130221002972. Its totient is φ = 130221002970.
The previous prime is 130221002963. The next prime is 130221003091. The reversal of 130221002971 is 179200122031.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 130221002971 - 23 = 130221002963 is a prime.
It is a super-2 number, since 2×1302210029712 (a number of 23 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (130221002911) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65110501485 + 65110501486.
It is an arithmetic number, because the mean of its divisors is an integer number (65110501486).
Almost surely, 2130221002971 is an apocalyptic number.
130221002971 is a deficient number, since it is larger than the sum of its proper divisors (1).
130221002971 is an equidigital number, since it uses as much as digits as its factorization.
130221002971 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1512, while the sum is 28.
The spelling of 130221002971 in words is "one hundred thirty billion, two hundred twenty-one million, two thousand, nine hundred seventy-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •