1201671101 has 2 divisors, whose sum is σ = 1201671102. Its totient is φ = 1201671100.

The previous prime is 1201671083. The next prime is 1201671103. The reversal of 1201671101 is 1011761021.

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., 1040127001 + 161544100 = 32251^2 + 12710^2 .

It is an emirp because it is prime and its reverse (1011761021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201671101 is a prime.

Together with 1201671103, 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 (1201671103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600835550 + 600835551.

It is an arithmetic number, because the mean of its divisors is an integer number (600835551).

Almost surely, 2^1201671101 is an apocalyptic number.

It is an amenable number.

1201671101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201671101 is an equidigital number, since it uses as much as digits as its factorization.

1201671101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 1201671101 is about 34665.1280251494. The cubic root of 1201671101 is about 1063.1516208807.

The spelling of 1201671101 in words is "one billion, two hundred one million, six hundred seventy-one thousand, one hundred one".