211020102111 has 64 divisors (see below), whose sum is σ = 376569381888. Its totient is φ = 101928388608.

The previous prime is 211020102079. The next prime is 211020102113. The reversal of 211020102111 is 111201020112.

It is not a de Polignac number, because 211020102111 - 2⁵ = 211020102079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020102113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 442725 + ... + 786158.

It is an arithmetic number, because the mean of its divisors is an integer number (5883896592).

Almost surely, 2^211020102111 is an apocalyptic number.

211020102111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211020102111 is a deficient number, since it is larger than the sum of its proper divisors (165549279777).

211020102111 is a wasteful number, since it uses less digits than its factorization.

211020102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228960.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211020102111 its reverse (111201020112), we get a palindrome (322221122223).

The spelling of 211020102111 in words is "two hundred eleven billion, twenty million, one hundred two thousand, one hundred eleven".