Base | Representation |
---|---|
bin | 1001100100000101010010… |
… | …10111100101011100101110 |
3 | 2202110112200122111220110220 |
4 | 10302002221113211130232 |
5 | 10224032442330212142 |
6 | 112421301512312210 |
7 | 4300303551315300 |
oct | 462025127453456 |
9 | 82415618456426 |
10 | 21031001413422 |
11 | 677921a025760 |
12 | 2437b479a2666 |
13 | b972a4257c90 |
14 | 529c97b07970 |
15 | 2670e80d62ec |
hex | 1320a95e572e |
21031001413422 has 192 divisors, whose sum is σ = 59036944587264. Its totient is φ = 4906116552960.
The previous prime is 21031001413403. The next prime is 21031001413447. The reversal of 21031001413422 is 22431410013012.
It is a junction number, because it is equal to n+sod(n) for n = 21031001413392 and 21031001413401.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5204418 + ... + 8315525.
It is an arithmetic number, because the mean of its divisors is an integer number (307484086392).
Almost surely, 221031001413422 is an apocalyptic number.
21031001413422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
21031001413422 is an abundant number, since it is smaller than the sum of its proper divisors (38005943173842).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21031001413422 is a wasteful number, since it uses less digits than its factorization.
21031001413422 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13520023 (or 13520016 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 24.
Adding to 21031001413422 its reverse (22431410013012), we get a palindrome (43462411426434).
The spelling of 21031001413422 in words is "twenty-one trillion, thirty-one billion, one million, four hundred thirteen thousand, four hundred twenty-two".
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