122110221021 has 4 divisors (see below), whose sum is σ = 162813628032. Its totient is φ = 81406814012.

The previous prime is 122110221011. The next prime is 122110221049. The reversal of 122110221021 is 120122011221.

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 122110221021 - 2¹⁰ = 122110219997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122110221001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20351703501 + ... + 20351703506.

It is an arithmetic number, because the mean of its divisors is an integer number (40703407008).

Almost surely, 2^122110221021 is an apocalyptic number.

It is an amenable number.

122110221021 is a deficient number, since it is larger than the sum of its proper divisors (40703407011).

122110221021 is an equidigital number, since it uses as much as digits as its factorization.

122110221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40703407010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122110221021 its reverse (120122011221), we get a palindrome (242232232242).

The spelling of 122110221021 in words is "one hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".