Base | Representation |
---|---|
bin | 111000011101000000… |
… | …0001001001000100111 |
3 | 102120220212202212110001 |
4 | 1300322000021020213 |
5 | 3441240420401411 |
6 | 131405430442131 |
7 | 11521150461622 |
oct | 1607200111047 |
9 | 376825685401 |
10 | 121232200231 |
11 | 4746146441a |
12 | 1b5b4503347 |
13 | b58057412c |
14 | 5c20c58db9 |
15 | 3248251dc1 |
hex | 1c3a009227 |
121232200231 has 2 divisors, whose sum is σ = 121232200232. Its totient is φ = 121232200230.
The previous prime is 121232200189. The next prime is 121232200237. The reversal of 121232200231 is 132002232121.
It is a strong prime.
It is an emirp because it is prime and its reverse (132002232121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 121232200231 - 217 = 121232069159 is a prime.
It is a super-2 number, since 2×1212322002312 (a number of 23 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 121232200199 and 121232200208.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (121232200237) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616100115 + 60616100116.
It is an arithmetic number, because the mean of its divisors is an integer number (60616100116).
Almost surely, 2121232200231 is an apocalyptic number.
121232200231 is a deficient number, since it is larger than the sum of its proper divisors (1).
121232200231 is an equidigital number, since it uses as much as digits as its factorization.
121232200231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 19.
Adding to 121232200231 its reverse (132002232121), we get a palindrome (253234432352).
The spelling of 121232200231 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred thousand, two hundred thirty-one".
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