211120001993 has 2 divisors, whose sum is σ = 211120001994. Its totient is φ = 211120001992.

The previous prime is 211120001909. The next prime is 211120002011. The reversal of 211120001993 is 399100021112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187032030784 + 24087971209 = 432472^2 + 155203^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120001993 - 2¹⁰ = 211120000969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211120004993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560000996 + 105560000997.

It is an arithmetic number, because the mean of its divisors is an integer number (105560000997).

Almost surely, 2^211120001993 is an apocalyptic number.

It is an amenable number.

211120001993 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120001993 is an equidigital number, since it uses as much as digits as its factorization.

211120001993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 211120001993 in words is "two hundred eleven billion, one hundred twenty million, one thousand, nine hundred ninety-three".