211020210011011 has 4 divisors (see below), whose sum is σ = 211646382741352. Its totient is φ = 210394037280672.

The previous prime is 211020210010943. The next prime is 211020210011021. The reversal of 211020210011011 is 110110012020112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211020210011011 - 2³³ = 211011620076419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020210010982 and 211020210011000.

It is not an unprimeable number, because it can be changed into a prime (211020210011021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313086364665 + ... + 313086365338.

It is an arithmetic number, because the mean of its divisors is an integer number (52911595685338).

Almost surely, 2^{211020210011011} is an apocalyptic number.

211020210011011 is a deficient number, since it is larger than the sum of its proper divisors (626172730341).

211020210011011 is an equidigital number, since it uses as much as digits as its factorization.

211020210011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626172730340.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211020210011011 its reverse (110110012020112), we get a palindrome (321130222031123).

The spelling of 211020210011011 in words is "two hundred eleven trillion, twenty billion, two hundred ten million, eleven thousand, eleven".