Base | Representation |
---|---|
bin | 1001101001011000111101… |
… | …11110010100111010000101 |
3 | 2210002222101202020221210112 |
4 | 10310230132332110322011 |
5 | 10240024431430124424 |
6 | 113041141241002405 |
7 | 4316420625323402 |
oct | 464543676247205 |
9 | 83088352227715 |
10 | 21213363129989 |
11 | 683959a501508 |
12 | 2467360483405 |
13 | bab547272a44 |
14 | 534a374392a9 |
15 | 26bc1cd0260e |
hex | 134b1ef94e85 |
21213363129989 has 2 divisors, whose sum is σ = 21213363129990. Its totient is φ = 21213363129988.
The previous prime is 21213363129953. The next prime is 21213363130067. The reversal of 21213363129989 is 98992136331212.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 20422716722500 + 790646407489 = 4519150^2 + 889183^2 .
It is a cyclic number.
It is not a de Polignac number, because 21213363129989 - 212 = 21213363125893 is a prime.
It is a super-2 number, since 2×212133631299892 (a number of 27 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21213363129089) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606681564994 + 10606681564995.
It is an arithmetic number, because the mean of its divisors is an integer number (10606681564995).
Almost surely, 221213363129989 is an apocalyptic number.
It is an amenable number.
21213363129989 is a deficient number, since it is larger than the sum of its proper divisors (1).
21213363129989 is an equidigital number, since it uses as much as digits as its factorization.
21213363129989 is an evil number, because the sum of its binary digits is even.
The product of its digits is 7558272, while the sum is 59.
The spelling of 21213363129989 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-three million, one hundred twenty-nine thousand, nine hundred eighty-nine".
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