20132120112101 has 4 divisors (see below), whose sum is σ = 20133807220332. Its totient is φ = 20130433003872.

The previous prime is 20132120112089. The next prime is 20132120112103. The reversal of 20132120112101 is 10121102123102.

It is a happy number.

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 6191985256900 + 13940134855201 = 2488370^2 + 3733649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132120112101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20132120112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132120112103) 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, 843536216 + ... + 843560081.

It is an arithmetic number, because the mean of its divisors is an integer number (5033451805083).

Almost surely, 2^{20132120112101} is an apocalyptic number.

It is an amenable number.

20132120112101 is a deficient number, since it is larger than the sum of its proper divisors (1687108231).

20132120112101 is a wasteful number, since it uses less digits than its factorization.

20132120112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687108230.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20132120112101 its reverse (10121102123102), we get a palindrome (30253222235203).

The spelling of 20132120112101 in words is "twenty trillion, one hundred thirty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred one".