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212021099 is a prime number
BaseRepresentation
bin11001010001100…
…10111101101011
3112202221210021022
430220302331223
5413234133344
633012203055
75153102213
oct1450627553
9482853238
10212021099
11a9753654
125b00948b
1334c05a94
1420231243
15139310ee
hexca32f6b

212021099 has 2 divisors, whose sum is σ = 212021100. Its totient is φ = 212021098.

The previous prime is 212021083. The next prime is 212021113. The reversal of 212021099 is 990120212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021099 - 24 = 212021083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212021599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010549 + 106010550.

It is an arithmetic number, because the mean of its divisors is an integer number (106010550).

Almost surely, 2212021099 is an apocalyptic number.

212021099 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021099 is an equidigital number, since it uses as much as digits as its factorization.

212021099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 212021099 is about 14560.9443031694. The cubic root of 212021099 is about 596.2929762002.

The spelling of 212021099 in words is "two hundred twelve million, twenty-one thousand, ninety-nine".