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21202112339 is a prime number
BaseRepresentation
bin10011101111101111…
…101000111101010011
32000201121111220100222
4103233233220331103
5321410220043324
613423510503255
71350256660412
oct235757507523
960647456328
1021202112339
118aa00488a1
124138664b2b
131ccb75b705
141051c05479
1584157255e
hex4efbe8f53

21202112339 has 2 divisors, whose sum is σ = 21202112340. Its totient is φ = 21202112338.

The previous prime is 21202112311. The next prime is 21202112341. The reversal of 21202112339 is 93321120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202112339 - 28 = 21202112083 is a prime.

Together with 21202112341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21202112359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601056169 + 10601056170.

It is an arithmetic number, because the mean of its divisors is an integer number (10601056170).

Almost surely, 221202112339 is an apocalyptic number.

21202112339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202112339 is an equidigital number, since it uses as much as digits as its factorization.

21202112339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 21202112339 in words is "twenty-one billion, two hundred two million, one hundred twelve thousand, three hundred thirty-nine".