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20302011121 = 729409439557
BaseRepresentation
bin10010111010000110…
…000001101011110001
31221101212211000121211
4102322012001223301
5313034303323441
613154314320121
71316050150540
oct227206015361
957355730554
1020302011121
118678a57497
123b27129041
131bb712ac42
14da8460157
157dc525a81
hex4ba181af1

20302011121 has 32 divisors (see below), whose sum is σ = 24159168000. Its totient is φ = 16692383232.

The previous prime is 20302011113. The next prime is 20302011127. The reversal of 20302011121 is 12111020302.

It is not a de Polignac number, because 20302011121 - 23 = 20302011113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302011127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36448575 + ... + 36449131.

It is an arithmetic number, because the mean of its divisors is an integer number (754974000).

Almost surely, 220302011121 is an apocalyptic number.

It is an amenable number.

20302011121 is a deficient number, since it is larger than the sum of its proper divisors (3857156879).

20302011121 is a wasteful number, since it uses less digits than its factorization.

20302011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20302011121 its reverse (12111020302), we get a palindrome (32413031423).

The spelling of 20302011121 in words is "twenty billion, three hundred two million, eleven thousand, one hundred twenty-one".

Divisors: 1 7 29 203 409 439 557 2863 3073 3899 11861 12731 16153 83027 89117 113071 179551 227813 244523 1256857 1594691 1711661 5206979 6606577 7091167 36448853 46246039 49638169 100009907 700069349 2900287303 20302011121