20320211123101 has 4 divisors (see below), whose sum is σ = 21515517659772. Its totient is φ = 19124904586432.

The previous prime is 20320211123053. The next prime is 20320211123141. The reversal of 20320211123101 is 10132111202302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10370911752100 + 9949299371001 = 3220390^2 + 3154251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320211123101 - 2⁷ = 20320211122973 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 (20320211123141) 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, 597653268310 + ... + 597653268343.

It is an arithmetic number, because the mean of its divisors is an integer number (5378879414943).

Almost surely, 2^{20320211123101} is an apocalyptic number.

It is an amenable number.

20320211123101 is a deficient number, since it is larger than the sum of its proper divisors (1195306536671).

20320211123101 is a wasteful number, since it uses less digits than its factorization.

20320211123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195306536670.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20320211123101 its reverse (10132111202302), we get a palindrome (30452322325403).

The spelling of 20320211123101 in words is "twenty trillion, three hundred twenty billion, two hundred eleven million, one hundred twenty-three thousand, one hundred one".