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2012221943 is a prime number
BaseRepresentation
bin111011111110000…
…0001000111110111
312012020100110120122
41313330001013313
513110112100233
6531400522155
7100602414164
oct16774010767
95166313518
102012221943
11942935146
12481a8035b
13260b66394
1415135b06b
15bb9c8d98
hex77f011f7

2012221943 has 2 divisors, whose sum is σ = 2012221944. Its totient is φ = 2012221942.

The previous prime is 2012221891. The next prime is 2012221957. The reversal of 2012221943 is 3491222102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012221943 - 212 = 2012217847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012221973) 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 as a sum of consecutive naturals, namely, 1006110971 + 1006110972.

It is an arithmetic number, because the mean of its divisors is an integer number (1006110972).

Almost surely, 22012221943 is an apocalyptic number.

2012221943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012221943 is an equidigital number, since it uses as much as digits as its factorization.

2012221943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2012221943 is about 44857.7969031026. The cubic root of 2012221943 is about 1262.4822869521.

The spelling of 2012221943 in words is "two billion, twelve million, two hundred twenty-one thousand, nine hundred forty-three".