211020211211101 has 16 divisors (see below), whose sum is σ = 233162730797184. Its totient is φ = 189959871591424.

The previous prime is 211020211211071. The next prime is 211020211211261. The reversal of 211020211211101 is 101112112020112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211020211211101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020211211401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11399020 + ... + 23494213.

It is an arithmetic number, because the mean of its divisors is an integer number (14572670674824).

Almost surely, 2^{211020211211101} is an apocalyptic number.

It is an amenable number.

211020211211101 is a deficient number, since it is larger than the sum of its proper divisors (22142519586083).

211020211211101 is a wasteful number, since it uses less digits than its factorization.

211020211211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34908740.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 211020211211101 its reverse (101112112020112), we get a palindrome (312132323231213).

The spelling of 211020211211101 in words is "two hundred eleven trillion, twenty billion, two hundred eleven million, two hundred eleven thousand, one hundred one".