2021122111193 has 2 divisors, whose sum is σ = 2021122111194. Its totient is φ = 2021122111192.

The previous prime is 2021122111181. The next prime is 2021122111231. The reversal of 2021122111193 is 3911112211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1805725875529 + 215396235664 = 1343773^2 + 464108^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021122111193 - 2³⁸ = 1746244204249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021122110193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010561055596 + 1010561055597.

It is an arithmetic number, because the mean of its divisors is an integer number (1010561055597).

Almost surely, 2^{2021122111193} is an apocalyptic number.

It is an amenable number.

2021122111193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021122111193 is an equidigital number, since it uses as much as digits as its factorization.

2021122111193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 2021122111193 its reverse (3911112211202), we get a palindrome (5932234322395).

The spelling of 2021122111193 in words is "two trillion, twenty-one billion, one hundred twenty-two million, one hundred eleven thousand, one hundred ninety-three".