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30002210123 = 50359646541
BaseRepresentation
bin11011111100010001…
…010110010101001011
32212102220110012002112
4123330101112111023
5442421031210443
621441031252535
72111324402234
oct337421262513
985386405075
1030002210123
11117a6513586
12599381a14b
132aa198a072
14164886208b
15ba8e13b18
hex6fc45654b

30002210123 has 4 divisors (see below), whose sum is σ = 30061857168. Its totient is φ = 29942563080.

The previous prime is 30002210087. The next prime is 30002210141. The reversal of 30002210123 is 32101220003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30002210123 is a prime.

It is a super-2 number, since 2×300022101232 (a number of 22 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 = 30002210098 and 30002210107.

It is not an unprimeable number, because it can be changed into a prime (30002210153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29822768 + ... + 29823773.

It is an arithmetic number, because the mean of its divisors is an integer number (7515464292).

Almost surely, 230002210123 is an apocalyptic number.

30002210123 is a deficient number, since it is larger than the sum of its proper divisors (59647045).

30002210123 is an equidigital number, since it uses as much as digits as its factorization.

30002210123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59647044.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30002210123 its reverse (32101220003), we get a palindrome (62103430126).

The spelling of 30002210123 in words is "thirty billion, two million, two hundred ten thousand, one hundred twenty-three".

Divisors: 1 503 59646541 30002210123