100722997 has 2 divisors, whose sum is σ = 100722998. Its totient is φ = 100722996.

The previous prime is 100722989. The next prime is 100723013. The reversal of 100722997 is 799227001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65189476 + 35533521 = 8074^2 + 5961^2 .

It is a cyclic number.

It is not a de Polignac number, because 100722997 - 2³ = 100722989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100722967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50361498 + 50361499.

It is an arithmetic number, because the mean of its divisors is an integer number (50361499).

Almost surely, 2^100722997 is an apocalyptic number.

It is an amenable number.

100722997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100722997 is an equidigital number, since it uses as much as digits as its factorization.

100722997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 100722997 is about 10036.0847445605. The cubic root of 100722997 is about 465.2748165462.

Adding to 100722997 its reverse (799227001), we get a palindrome (899949998).

The spelling of 100722997 in words is "one hundred million, seven hundred twenty-two thousand, nine hundred ninety-seven".