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20012011 is a prime number
BaseRepresentation
bin100110001010…
…1101111101011
31101122201022121
41030111233223
520110341021
61552532111
7332046025
oct114255753
941581277
1020012011
1110329358
126851037
1341b8a36
14292d015
151b54741
hex1315beb

20012011 has 2 divisors, whose sum is σ = 20012012. Its totient is φ = 20012010.

The previous prime is 20011993. The next prime is 20012023. The reversal of 20012011 is 11021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012011 - 215 = 19979243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20011985 and 20012003.

It is not a weakly prime, because it can be changed into another prime (20012411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006005 + 10006006.

It is an arithmetic number, because the mean of its divisors is an integer number (10006006).

Almost surely, 220012011 is an apocalyptic number.

20012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012011 is an equidigital number, since it uses as much as digits as its factorization.

20012011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 20012011 is about 4473.4786240687. The cubic root of 20012011 is about 271.4960889022.

Adding to 20012011 its reverse (11021002), we get a palindrome (31033013).

The spelling of 20012011 in words is "twenty million, twelve thousand, eleven".