122020213321 has 2 divisors, whose sum is σ = 122020213322. Its totient is φ = 122020213320.

The previous prime is 122020213313. The next prime is 122020213363. The reversal of 122020213321 is 123312020221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119000161296 + 3020052025 = 344964^2 + 54955^2 .

It is a cyclic number.

It is not a de Polignac number, because 122020213321 - 2³ = 122020213313 is a prime.

It is not a weakly prime, because it can be changed into another prime (122020216321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010106660 + 61010106661.

It is an arithmetic number, because the mean of its divisors is an integer number (61010106661).

Almost surely, 2^122020213321 is an apocalyptic number.

It is an amenable number.

122020213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

122020213321 is an equidigital number, since it uses as much as digits as its factorization.

122020213321 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 19.

Adding to 122020213321 its reverse (123312020221), we get a palindrome (245332233542).

The spelling of 122020213321 in words is "one hundred twenty-two billion, twenty million, two hundred thirteen thousand, three hundred twenty-one".