7121612101 has 2 divisors, whose sum is σ = 7121612102. Its totient is φ = 7121612100.

The previous prime is 7121612077. The next prime is 7121612143. The reversal of 7121612101 is 1012161217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5834668225 + 1286943876 = 76385^2 + 35874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7121612101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7121612191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560806050 + 3560806051.

It is an arithmetic number, because the mean of its divisors is an integer number (3560806051).

Almost surely, 2^7121612101 is an apocalyptic number.

It is an amenable number.

7121612101 is a deficient number, since it is larger than the sum of its proper divisors (1).

7121612101 is an equidigital number, since it uses as much as digits as its factorization.

7121612101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 7121612101 is about 84389.6445128192. The cubic root of 7121612101 is about 1923.9455270365.

Adding to 7121612101 its reverse (1012161217), we get a palindrome (8133773318).

The spelling of 7121612101 in words is "seven billion, one hundred twenty-one million, six hundred twelve thousand, one hundred one".