20322231289 has 2 divisors, whose sum is σ = 20322231290. Its totient is φ = 20322231288.

The previous prime is 20322231287. The next prime is 20322231343. The reversal of 20322231289 is 98213222302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10498051600 + 9824179689 = 102460^2 + 99117^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322231289 - 2¹ = 20322231287 is a prime.

It is a super-2 number, since 2×20322231289² (a number of 21 digits) contains 22 as substring.

Together with 20322231287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20322231287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161115644 + 10161115645.

It is an arithmetic number, because the mean of its divisors is an integer number (10161115645).

Almost surely, 2^20322231289 is an apocalyptic number.

It is an amenable number.

20322231289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322231289 is an equidigital number, since it uses as much as digits as its factorization.

20322231289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20322231289 in words is "twenty billion, three hundred twenty-two million, two hundred thirty-one thousand, two hundred eighty-nine".