Base | Representation |
---|---|
bin | 10010101010101111… |
… | …01111010011100111 |
3 | 221212110120120122112 |
4 | 21111113233103213 |
5 | 131011142033111 |
6 | 4334254551235 |
7 | 503234321204 |
oct | 112527572347 |
9 | 27773516575 |
10 | 10022221031 |
11 | 4283311aa9 |
12 | 1b3850851b |
13 | c3949a804 |
14 | 6b10a8cab |
15 | 3d9cebe8b |
hex | 2555ef4e7 |
10022221031 has 4 divisors (see below), whose sum is σ = 10045367472. Its totient is φ = 9999074592.
The previous prime is 10022221007. The next prime is 10022221049. The reversal of 10022221031 is 13012222001.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13012222001 = 149 ⋅87330349.
It is a cyclic number.
It is not a de Polignac number, because 10022221031 - 222 = 10018026727 is a prime.
It is a super-2 number, since 2×100222210312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 10022220997 and 10022221015.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10022221081) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11572571 + ... + 11573436.
It is an arithmetic number, because the mean of its divisors is an integer number (2511341868).
Almost surely, 210022221031 is an apocalyptic number.
10022221031 is a deficient number, since it is larger than the sum of its proper divisors (23146441).
10022221031 is an equidigital number, since it uses as much as digits as its factorization.
10022221031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23146440.
The product of its (nonzero) digits is 48, while the sum is 14.
Adding to 10022221031 its reverse (13012222001), we get a palindrome (23034443032).
The spelling of 10022221031 in words is "ten billion, twenty-two million, two hundred twenty-one thousand, thirty-one".
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