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2120109911 is a prime number
BaseRepresentation
bin111111001011110…
…0100111101010111
312110202100202001022
41332113210331113
513320222004121
6550213151355
7103352431313
oct17627447527
95422322038
102120109911
11998823a57
124b202b55b
1327a30c30a
14161802b43
15c61daaab
hex7e5e4f57

2120109911 has 2 divisors, whose sum is σ = 2120109912. Its totient is φ = 2120109910.

The previous prime is 2120109907. The next prime is 2120109941. The reversal of 2120109911 is 1199010212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120109911 - 22 = 2120109907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120109941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060054955 + 1060054956.

It is an arithmetic number, because the mean of its divisors is an integer number (1060054956).

Almost surely, 22120109911 is an apocalyptic number.

2120109911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120109911 is an equidigital number, since it uses as much as digits as its factorization.

2120109911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 2120109911 is about 46044.6512746052. The cubic root of 2120109911 is about 1284.6538578241.

The spelling of 2120109911 in words is "two billion, one hundred twenty million, one hundred nine thousand, nine hundred eleven".