2111021112121 has 8 divisors (see below), whose sum is σ = 2111614485120. Its totient is φ = 2110427827872.

The previous prime is 2111021112119. The next prime is 2111021112133. The reversal of 2111021112121 is 1212111201112.

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 2111021112121 - 2¹ = 2111021112119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111021112095 and 2111021112104.

It is not an unprimeable number, because it can be changed into a prime (2111021182121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108621021 + ... + 108640453.

It is an arithmetic number, because the mean of its divisors is an integer number (263951810640).

Almost surely, 2^{2111021112121} is an apocalyptic number.

It is an amenable number.

2111021112121 is a deficient number, since it is larger than the sum of its proper divisors (593372999).

2111021112121 is a wasteful number, since it uses less digits than its factorization.

2111021112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44375.

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

Adding to 2111021112121 its reverse (1212111201112), we get a palindrome (3323132313233).

The spelling of 2111021112121 in words is "two trillion, one hundred eleven billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".