122130144021 has 4 divisors (see below), whose sum is σ = 162840192032. Its totient is φ = 81420096012.

The previous prime is 122130144013. The next prime is 122130144053. The reversal of 122130144021 is 120441031221.

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 122130144021 - 2³ = 122130144013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122130143021) 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, 20355024001 + ... + 20355024006.

It is an arithmetic number, because the mean of its divisors is an integer number (40710048008).

Almost surely, 2^122130144021 is an apocalyptic number.

It is an amenable number.

122130144021 is a deficient number, since it is larger than the sum of its proper divisors (40710048011).

122130144021 is an equidigital number, since it uses as much as digits as its factorization.

122130144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40710048010.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 122130144021 its reverse (120441031221), we get a palindrome (242571175242).

The spelling of 122130144021 in words is "one hundred twenty-two billion, one hundred thirty million, one hundred forty-four thousand, twenty-one".