321212022113 has 2 divisors, whose sum is σ = 321212022114. Its totient is φ = 321212022112.

The previous prime is 321212022107. The next prime is 321212022169. The reversal of 321212022113 is 311220212123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177516440929 + 143695581184 = 421327^2 + 379072^2 .

It is an emirp because it is prime and its reverse (311220212123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321212022113 - 2⁴ = 321212022097 is a prime.

It is not a weakly prime, because it can be changed into another prime (321212022713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160606011056 + 160606011057.

It is an arithmetic number, because the mean of its divisors is an integer number (160606011057).

Almost surely, 2^321212022113 is an apocalyptic number.

It is an amenable number.

321212022113 is a deficient number, since it is larger than the sum of its proper divisors (1).

321212022113 is an equidigital number, since it uses as much as digits as its factorization.

321212022113 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 321212022113 its reverse (311220212123), we get a palindrome (632432234236).

The spelling of 321212022113 in words is "three hundred twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred thirteen".