11780101 has 2 divisors, whose sum is σ = 11780102. Its totient is φ = 11780100.

The previous prime is 11780081. The next prime is 11780113. The reversal of 11780101 is 10108711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 3996001 = 2790^2 + 1999^2 .

It is an emirp because it is prime and its reverse (10108711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11780101 - 2⁷ = 11779973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11780191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5890050 + 5890051.

It is an arithmetic number, because the mean of its divisors is an integer number (5890051).

Almost surely, 2^11780101 is an apocalyptic number.

It is an amenable number.

11780101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11780101 is an equidigital number, since it uses as much as digits as its factorization.

11780101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

The square root of 11780101 is about 3432.2151739074. The cubic root of 11780101 is about 227.5357654191.

Adding to 11780101 its reverse (10108711), we get a palindrome (21888812).

It can be divided in two parts, 11780 and 101, that added together give a square (11881 = 109²).

The spelling of 11780101 in words is "eleven million, seven hundred eighty thousand, one hundred one".