21032101193 has 2 divisors, whose sum is σ = 21032101194. Its totient is φ = 21032101192.

The previous prime is 21032101177. The next prime is 21032101229. The reversal of 21032101193 is 39110123012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16232798464 + 4799302729 = 127408^2 + 69277^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032101193 - 2⁴ = 21032101177 is a prime.

It is not a weakly prime, because it can be changed into another prime (21032101093) 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, 10516050596 + 10516050597.

It is an arithmetic number, because the mean of its divisors is an integer number (10516050597).

Almost surely, 2^21032101193 is an apocalyptic number.

It is an amenable number.

21032101193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032101193 is an equidigital number, since it uses as much as digits as its factorization.

21032101193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21032101193 in words is "twenty-one billion, thirty-two million, one hundred one thousand, one hundred ninety-three".