122120213321 has 2 divisors, whose sum is σ = 122120213322. Its totient is φ = 122120213320.

The previous prime is 122120213233. The next prime is 122120213329. The reversal of 122120213321 is 123312021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118887040000 + 3233173321 = 344800^2 + 56861^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120213321 - 2¹⁴ = 122120196937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122120213293 and 122120213302.

It is not a weakly prime, because it can be changed into another prime (122120213329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060106660 + 61060106661.

It is an arithmetic number, because the mean of its divisors is an integer number (61060106661).

Almost surely, 2^122120213321 is an apocalyptic number.

It is an amenable number.

122120213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120213321 is an equidigital number, since it uses as much as digits as its factorization.

122120213321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 122120213321 its reverse (123312021221), we get a palindrome (245432234542).

The spelling of 122120213321 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred thirteen thousand, three hundred twenty-one".