211020203310011 has 8 divisors (see below), whose sum is σ = 230640677622144. Its totient is φ = 192200564684160.

The previous prime is 211020203309953. The next prime is 211020203310047. The reversal of 211020203310011 is 110013302020112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211020203310011 - 2¹⁰ = 211020203308987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211020203390011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200208921020 + ... + 200208922073.

It is an arithmetic number, because the mean of its divisors is an integer number (28830084702768).

Almost surely, 2^{211020203310011} is an apocalyptic number.

211020203310011 is a deficient number, since it is larger than the sum of its proper divisors (19620474312133).

211020203310011 is a wasteful number, since it uses less digits than its factorization.

211020203310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400417843141.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211020203310011 its reverse (110013302020112), we get a palindrome (321033505330123).

The spelling of 211020203310011 in words is "two hundred eleven trillion, twenty billion, two hundred three million, three hundred ten thousand, eleven".