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1201110101 is a prime number
BaseRepresentation
bin100011110010111…
…0111110001010101
310002201002201022022
41013211313301111
54424441010401
6315103542525
741523160502
oct10745676125
93081081268
101201110101
11566aa4884
122962baa45
13161ac2849
14b573c4a9
15706a971b
hex47977c55

1201110101 has 2 divisors, whose sum is σ = 1201110102. Its totient is φ = 1201110100.

The previous prime is 1201110073. The next prime is 1201110103. The reversal of 1201110101 is 1010111021.

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., 1197229201 + 3880900 = 34601^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201110101 - 26 = 1201110037 is a prime.

Together with 1201110103, 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 (1201110103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555050 + 600555051.

It is an arithmetic number, because the mean of its divisors is an integer number (600555051).

Almost surely, 21201110101 is an apocalyptic number.

It is an amenable number.

1201110101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201110101 is an equidigital number, since it uses as much as digits as its factorization.

1201110101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1201110101 is about 34657.0353752308. The cubic root of 1201110101 is about 1062.9861510621.

Adding to 1201110101 its reverse (1010111021), we get a palindrome (2211221122).

The spelling of 1201110101 in words is "one billion, two hundred one million, one hundred ten thousand, one hundred one".