211002101993 has 2 divisors, whose sum is σ = 211002101994. Its totient is φ = 211002101992.

The previous prime is 211002101929. The next prime is 211002102127. The reversal of 211002101993 is 399101200112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190761918169 + 20240183824 = 436763^2 + 142268^2 .

It is a cyclic number.

It is not a de Polignac number, because 211002101993 - 2⁶ = 211002101929 is a prime.

It is not a weakly prime, because it can be changed into another prime (211002101923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501050996 + 105501050997.

It is an arithmetic number, because the mean of its divisors is an integer number (105501050997).

Almost surely, 2^211002101993 is an apocalyptic number.

It is an amenable number.

211002101993 is a deficient number, since it is larger than the sum of its proper divisors (1).

211002101993 is an equidigital number, since it uses as much as digits as its factorization.

211002101993 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 211002101993 in words is "two hundred eleven billion, two million, one hundred one thousand, nine hundred ninety-three".