2110121122121 has 4 divisors (see below), whose sum is σ = 2112062356992. Its totient is φ = 2108179887252.

The previous prime is 2110121122111. The next prime is 2110121122127. The reversal of 2110121122121 is 1212211210112.

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 2110121122121 - 2¹⁴ = 2110121105737 is a prime.

It is a super-2 number, since 2×2110121122121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2110121122121.

It is not an unprimeable number, because it can be changed into a prime (2110121122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970615805 + ... + 970617978.

It is an arithmetic number, because the mean of its divisors is an integer number (528015589248).

Almost surely, 2^{2110121122121} is an apocalyptic number.

It is an amenable number.

2110121122121 is a deficient number, since it is larger than the sum of its proper divisors (1941234871).

2110121122121 is a wasteful number, since it uses less digits than its factorization.

2110121122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941234870.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2110121122121 its reverse (1212211210112), we get a palindrome (3322332332233).

The spelling of 2110121122121 in words is "two trillion, one hundred ten billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".