122132123021 has 2 divisors, whose sum is σ = 122132123022. Its totient is φ = 122132123020.

The previous prime is 122132122999. The next prime is 122132123053. The reversal of 122132123021 is 120321231221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102455047396 + 19677075625 = 320086^2 + 140275^2 .

It is an emirp because it is prime and its reverse (120321231221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122132123021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122132122984 and 122132123002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122132126021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61066061510 + 61066061511.

It is an arithmetic number, because the mean of its divisors is an integer number (61066061511).

Almost surely, 2^122132123021 is an apocalyptic number.

It is an amenable number.

122132123021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122132123021 is an equidigital number, since it uses as much as digits as its factorization.

122132123021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 122132123021 its reverse (120321231221), we get a palindrome (242453354242).

The spelling of 122132123021 in words is "one hundred twenty-two billion, one hundred thirty-two million, one hundred twenty-three thousand, twenty-one".