2112101012121 has 8 divisors (see below), whose sum is σ = 2854711870560. Its totient is φ = 1388778747552.

The previous prime is 2112101012111. The next prime is 2112101012159. The reversal of 2112101012121 is 1212101012112.

It is a happy number.

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

It is not a de Polignac number, because 2112101012121 - 2⁵ = 2112101012089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112101012121.

It is not an unprimeable number, because it can be changed into a prime (2112101012111) 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, 4822148211 + ... + 4822148648.

It is an arithmetic number, because the mean of its divisors is an integer number (356838983820).

Almost surely, 2^{2112101012121} is an apocalyptic number.

It is an amenable number.

2112101012121 is a deficient number, since it is larger than the sum of its proper divisors (742610858439).

2112101012121 is an equidigital number, since it uses as much as digits as its factorization.

2112101012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644296935.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2112101012121 its reverse (1212101012112), we get a palindrome (3324202024233).

Subtracting from 2112101012121 its reverse (1212101012112), we obtain a palindrome (900000000009).

The spelling of 2112101012121 in words is "two trillion, one hundred twelve billion, one hundred one million, twelve thousand, one hundred twenty-one".