201112101021121 has 4 divisors (see below), whose sum is σ = 201316691155392. Its totient is φ = 200907510886852.

The previous prime is 201112101021047. The next prime is 201112101021137. The reversal of 201112101021121 is 121120101211102.

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 a cyclic number.

It is not a de Polignac number, because 201112101021121 - 2¹¹ = 201112101019073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201112101021095 and 201112101021104.

It is not an unprimeable number, because it can be changed into a prime (201112101021151) 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, 102295065661 + ... + 102295067626.

It is an arithmetic number, because the mean of its divisors is an integer number (50329172788848).

Almost surely, 2^{201112101021121} is an apocalyptic number.

It is an amenable number.

201112101021121 is a deficient number, since it is larger than the sum of its proper divisors (204590134271).

201112101021121 is an equidigital number, since it uses as much as digits as its factorization.

201112101021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204590134270.

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

Adding to 201112101021121 its reverse (121120101211102), we get a palindrome (322232202232223).

The spelling of 201112101021121 in words is "two hundred one trillion, one hundred twelve billion, one hundred one million, twenty-one thousand, one hundred twenty-one".