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30230203211021 = 112748200291911
BaseRepresentation
bin1101101111110100001001…
…00001100001110100001101
310222000222102211122112110202
412313322010201201310031
512430242424010223041
6144143321424543245
76240026421402062
oct667720441416415
9128028384575422
1030230203211021
1196a5614681780
123482995a81b25
1313b3907c63208
14767214892c69
15376554b17a9b
hex1b7e84861d0d

30230203211021 has 4 divisors (see below), whose sum is σ = 32978403502944. Its totient is φ = 27482002919100.

The previous prime is 30230203211011. The next prime is 30230203211083. The reversal of 30230203211021 is 12011230203203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30230203211021 - 214 = 30230203194637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30230203210984 and 30230203211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230203211011) 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, 1374100145945 + ... + 1374100145966.

It is an arithmetic number, because the mean of its divisors is an integer number (8244600875736).

Almost surely, 230230203211021 is an apocalyptic number.

It is an amenable number.

30230203211021 is a deficient number, since it is larger than the sum of its proper divisors (2748200291923).

30230203211021 is a wasteful number, since it uses less digits than its factorization.

30230203211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748200291922.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30230203211021 its reverse (12011230203203), we get a palindrome (42241433414224).

The spelling of 30230203211021 in words is "thirty trillion, two hundred thirty billion, two hundred three million, two hundred eleven thousand, twenty-one".

Divisors: 1 11 2748200291911 30230203211021