20330021323 has 2 divisors, whose sum is σ = 20330021324. Its totient is φ = 20330021322.

The previous prime is 20330021317. The next prime is 20330021381. The reversal of 20330021323 is 32312003302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20330021323 - 2²¹ = 20327924171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20330021323.

It is not a weakly prime, because it can be changed into another prime (20336021323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165010661 + 10165010662.

It is an arithmetic number, because the mean of its divisors is an integer number (10165010662).

Almost surely, 2^20330021323 is an apocalyptic number.

20330021323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330021323 is an equidigital number, since it uses as much as digits as its factorization.

20330021323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20330021323 its reverse (32312003302), we get a palindrome (52642024625).

The spelling of 20330021323 in words is "twenty billion, three hundred thirty million, twenty-one thousand, three hundred twenty-three".