2110201111121 has 4 divisors (see below), whose sum is σ = 2110626817332. Its totient is φ = 2109775404912.

The previous prime is 2110201111111. The next prime is 2110201111171. The reversal of 2110201111121 is 1211111020112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1682662980625 + 427538130496 = 1297175^2 + 653864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110201111121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110201111096 and 2110201111105.

It is not an unprimeable number, because it can be changed into a prime (2110201111111) 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, 212845670 + ... + 212855583.

It is an arithmetic number, because the mean of its divisors is an integer number (527656704333).

Almost surely, 2^{2110201111121} is an apocalyptic number.

It is an amenable number.

2110201111121 is a deficient number, since it is larger than the sum of its proper divisors (425706211).

2110201111121 is an equidigital number, since it uses as much as digits as its factorization.

2110201111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425706210.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2110201111121 its reverse (1211111020112), we get a palindrome (3321312131233).

The spelling of 2110201111121 in words is "two trillion, one hundred ten billion, two hundred one million, one hundred eleven thousand, one hundred twenty-one".