122321120021 has 4 divisors (see below), whose sum is σ = 122328967200. Its totient is φ = 122313272844.

The previous prime is 122321120003. The next prime is 122321120063. The reversal of 122321120021 is 120021123221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120021123221 = 157 ⋅764465753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122321120021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122321120071) 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, 3900161 + ... + 3931398.

It is an arithmetic number, because the mean of its divisors is an integer number (30582241800).

Almost surely, 2^122321120021 is an apocalyptic number.

It is an amenable number.

122321120021 is a deficient number, since it is larger than the sum of its proper divisors (7847179).

122321120021 is an equidigital number, since it uses as much as digits as its factorization.

122321120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847178.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122321120021 its reverse (120021123221), we get a palindrome (242342243242).

The spelling of 122321120021 in words is "one hundred twenty-two billion, three hundred twenty-one million, one hundred twenty thousand, twenty-one".