211020110121 has 16 divisors (see below), whose sum is σ = 284205504960. Its totient is φ = 139257979200.

The previous prime is 211020110111. The next prime is 211020110129. The reversal of 211020110121 is 121011020112.

It is not a de Polignac number, because 211020110121 - 2⁵ = 211020110089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211020110097 and 211020110106.

It is not an unprimeable number, because it can be changed into a prime (211020110129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1424110 + ... + 1565288.

It is an arithmetic number, because the mean of its divisors is an integer number (17762844060).

Almost surely, 2^211020110121 is an apocalyptic number.

It is an amenable number.

211020110121 is a deficient number, since it is larger than the sum of its proper divisors (73185394839).

211020110121 is a wasteful number, since it uses less digits than its factorization.

211020110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146216.

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

Adding to 211020110121 its reverse (121011020112), we get a palindrome (332031130233).

Subtracting from 211020110121 its reverse (121011020112), we obtain a palindrome (90009090009).

The spelling of 211020110121 in words is "two hundred eleven billion, twenty million, one hundred ten thousand, one hundred twenty-one".