1211100220193 has 2 divisors, whose sum is σ = 1211100220194. Its totient is φ = 1211100220192.

The previous prime is 1211100220181. The next prime is 1211100220223. The reversal of 1211100220193 is 3910220011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740575561489 + 470524658704 = 860567^2 + 685948^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211100220193 - 2⁶ = 1211100220129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211100220793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550110096 + 605550110097.

It is an arithmetic number, because the mean of its divisors is an integer number (605550110097).

Almost surely, 2^{1211100220193} is an apocalyptic number.

It is an amenable number.

1211100220193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211100220193 is an equidigital number, since it uses as much as digits as its factorization.

1211100220193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1211100220193 in words is "one trillion, two hundred eleven billion, one hundred million, two hundred twenty thousand, one hundred ninety-three".