20321011101 has 4 divisors (see below), whose sum is σ = 27094681472. Its totient is φ = 13547340732.

The previous prime is 20321011093. The next prime is 20321011147. The reversal of 20321011101 is 10111012302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20321011101 - 2³ = 20321011093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321011181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3386835181 + ... + 3386835186.

It is an arithmetic number, because the mean of its divisors is an integer number (6773670368).

Almost surely, 2^20321011101 is an apocalyptic number.

It is an amenable number.

20321011101 is a deficient number, since it is larger than the sum of its proper divisors (6773670371).

20321011101 is an equidigital number, since it uses as much as digits as its factorization.

20321011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773670370.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20321011101 its reverse (10111012302), we get a palindrome (30432023403).

The spelling of 20321011101 in words is "twenty billion, three hundred twenty-one million, eleven thousand, one hundred one".