20122112110121 has 4 divisors (see below), whose sum is σ = 22996699554432. Its totient is φ = 17247524665812.

The previous prime is 20122112110063. The next prime is 20122112110141. The reversal of 20122112110121 is 12101121122102.

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 not a de Polignac number, because 20122112110121 - 2³⁴ = 20104932240937 is a prime.

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 20122112110121.

It is not an unprimeable number, because it can be changed into a prime (20122112110141) 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, 1437293722145 + ... + 1437293722158.

It is an arithmetic number, because the mean of its divisors is an integer number (5749174888608).

Almost surely, 2^{20122112110121} is an apocalyptic number.

It is an amenable number.

20122112110121 is a deficient number, since it is larger than the sum of its proper divisors (2874587444311).

20122112110121 is an equidigital number, since it uses as much as digits as its factorization.

20122112110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874587444310.

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

Adding to 20122112110121 its reverse (12101121122102), we get a palindrome (32223233232223).

The spelling of 20122112110121 in words is "twenty trillion, one hundred twenty-two billion, one hundred twelve million, one hundred ten thousand, one hundred twenty-one".