2102112121 has 8 divisors (see below), whose sum is σ = 2138457600. Its totient is φ = 2065790640.

The previous prime is 2102112119. The next prime is 2102112127. The reversal of 2102112121 is 1212112012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102112121 - 2¹ = 2102112119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102112127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342760 + ... + 348838.

It is an arithmetic number, because the mean of its divisors is an integer number (267307200).

Almost surely, 2^2102112121 is an apocalyptic number.

It is an amenable number.

2102112121 is a deficient number, since it is larger than the sum of its proper divisors (36345479).

2102112121 is an equidigital number, since it uses as much as digits as its factorization.

2102112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11999.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2102112121 is about 45848.7962873618. The cubic root of 2102112121 is about 1281.0083446493.

Adding to 2102112121 its reverse (1212112012), we get a palindrome (3314224133).

The spelling of 2102112121 in words is "two billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".