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20223101 is a prime number
BaseRepresentation
bin100110100100…
…1010001111101
31102001102212202
41031021101331
520134114401
62001241245
7333615323
oct115112175
942042782
1020223101
1110462a08
126933225
134260b42
142985d13
151b9706b
hex134947d

20223101 has 2 divisors, whose sum is σ = 20223102. Its totient is φ = 20223100.

The previous prime is 20223089. The next prime is 20223103. The reversal of 20223101 is 10132202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 63001 = 4490^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20223101 - 26 = 20223037 is a prime.

Together with 20223103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20223103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111550 + 10111551.

It is an arithmetic number, because the mean of its divisors is an integer number (10111551).

Almost surely, 220223101 is an apocalyptic number.

It is an amenable number.

20223101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223101 is an equidigital number, since it uses as much as digits as its factorization.

20223101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20223101 is about 4497.0102290299. The cubic root of 20223101 is about 272.4473472324.

Adding to 20223101 its reverse (10132202), we get a palindrome (30355303).

The spelling of 20223101 in words is "twenty million, two hundred twenty-three thousand, one hundred one".