211020000110121 has 4 divisors (see below), whose sum is σ = 281360000146832. Its totient is φ = 140680000073412.

The previous prime is 211020000110093. The next prime is 211020000110209. The reversal of 211020000110121 is 121011000020112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211020000110121 - 2³⁰ = 211018926368297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020000110097 and 211020000110106.

It is not an unprimeable number, because it can be changed into a prime (211020000150121) 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, 35170000018351 + ... + 35170000018356.

It is an arithmetic number, because the mean of its divisors is an integer number (70340000036708).

Almost surely, 2^{211020000110121} is an apocalyptic number.

It is an amenable number.

211020000110121 is a deficient number, since it is larger than the sum of its proper divisors (70340000036711).

211020000110121 is an equidigital number, since it uses as much as digits as its factorization.

211020000110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70340000036710.

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

Adding to 211020000110121 its reverse (121011000020112), we get a palindrome (332031000130233).

Subtracting from 211020000110121 its reverse (121011000020112), we obtain a palindrome (90009000090009).

The spelling of 211020000110121 in words is "two hundred eleven trillion, twenty billion, one hundred ten thousand, one hundred twenty-one".