Base | Representation |
---|---|
bin | 111100001100111… |
… | …011011011101001 |
3 | 2121101112102212201 |
4 | 330030323123221 |
5 | 4032031201441 |
6 | 244120140201 |
7 | 34013021623 |
oct | 7414733351 |
9 | 2541472781 |
10 | 1010022121 |
11 | 479149629 |
12 | 242307661 |
13 | 131338b34 |
14 | 981d9c13 |
15 | 5da10c31 |
hex | 3c33b6e9 |
1010022121 has 16 divisors (see below), whose sum is σ = 1118520000. Its totient is φ = 908179776.
The previous prime is 1010022089. The next prime is 1010022127. The reversal of 1010022121 is 1212200101.
It is not a de Polignac number, because 1010022121 - 25 = 1010022089 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1010022098 and 1010022107.
It is not an unprimeable number, because it can be changed into a prime (1010022127) 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, 16975 + ... + 48043.
It is an arithmetic number, because the mean of its divisors is an integer number (69907500).
Almost surely, 21010022121 is an apocalyptic number.
It is an amenable number.
1010022121 is a deficient number, since it is larger than the sum of its proper divisors (108497879).
1010022121 is a wasteful number, since it uses less digits than its factorization.
1010022121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31176.
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 1010022121 is about 31780.8451901456. The cubic root of 1010022121 is about 1003.3296084035.
Adding to 1010022121 its reverse (1212200101), we get a palindrome (2222222222).
The spelling of 1010022121 in words is "one billion, ten million, twenty-two thousand, one hundred twenty-one".
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