20323211101 has 2 divisors, whose sum is σ = 20323211102. Its totient is φ = 20323211100.

The previous prime is 20323211081. The next prime is 20323211137. The reversal of 20323211101 is 10111232302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19579285476 + 743925625 = 139926^2 + 27275^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323211101 - 2²⁷ = 20188993373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323211141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161605550 + 10161605551.

It is an arithmetic number, because the mean of its divisors is an integer number (10161605551).

Almost surely, 2^20323211101 is an apocalyptic number.

It is an amenable number.

20323211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323211101 is an equidigital number, since it uses as much as digits as its factorization.

20323211101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20323211101 its reverse (10111232302), we get a palindrome (30434443403).

The spelling of 20323211101 in words is "twenty billion, three hundred twenty-three million, two hundred eleven thousand, one hundred one".