122110121021 has 4 divisors (see below), whose sum is σ = 139554424032. Its totient is φ = 104665818012.

The previous prime is 122110121011. The next prime is 122110121027. The reversal of 122110121021 is 120121011221.

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 122110121021 - 2³⁰ = 121036379197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122110120987 and 122110121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122110121027) 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, 8722151495 + ... + 8722151508.

It is an arithmetic number, because the mean of its divisors is an integer number (34888606008).

Almost surely, 2^122110121021 is an apocalyptic number.

It is an amenable number.

122110121021 is a deficient number, since it is larger than the sum of its proper divisors (17444303011).

122110121021 is an equidigital number, since it uses as much as digits as its factorization.

122110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17444303010.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122110121021 its reverse (120121011221), we get a palindrome (242231132242).

The spelling of 122110121021 in words is "one hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".