20112310213321 has 2 divisors, whose sum is σ = 20112310213322. Its totient is φ = 20112310213320.

The previous prime is 20112310213319. The next prime is 20112310213393. The reversal of 20112310213321 is 12331201321102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19114698785296 + 997611428025 = 4372036^2 + 998805^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112310213321 - 2¹ = 20112310213319 is a prime.

Together with 20112310213319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20112310213292 and 20112310213301.

It is not a weakly prime, because it can be changed into another prime (20112310219321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056155106660 + 10056155106661.

It is an arithmetic number, because the mean of its divisors is an integer number (10056155106661).

Almost surely, 2^{20112310213321} is an apocalyptic number.

It is an amenable number.

20112310213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112310213321 is an equidigital number, since it uses as much as digits as its factorization.

20112310213321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20112310213321 its reverse (12331201321102), we get a palindrome (32443511534423).

The spelling of 20112310213321 in words is "twenty trillion, one hundred twelve billion, three hundred ten million, two hundred thirteen thousand, three hundred twenty-one".