211720006102011 has 8 divisors (see below), whose sum is σ = 307956372512064. Its totient is φ = 128315155213320.

The previous prime is 211720006101811. The next prime is 211720006102037. The reversal of 211720006102011 is 110201600027112.

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

It is not a de Polignac number, because 211720006102011 - 2²³ = 211719997713403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211720006101011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207878880301 + ... + 3207878880366.

It is an arithmetic number, because the mean of its divisors is an integer number (38494546564008).

Almost surely, 2^{211720006102011} is an apocalyptic number.

211720006102011 is a deficient number, since it is larger than the sum of its proper divisors (96236366410053).

211720006102011 is a wasteful number, since it uses less digits than its factorization.

211720006102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415757760681.

The product of its (nonzero) digits is 336, while the sum is 24.

Adding to 211720006102011 its reverse (110201600027112), we get a palindrome (321921606129123).

The spelling of 211720006102011 in words is "two hundred eleven trillion, seven hundred twenty billion, six million, one hundred two thousand, eleven".