20112343201 has 4 divisors (see below), whose sum is σ = 21170887600. Its totient is φ = 19053798804.

The previous prime is 20112343183. The next prime is 20112343213. The reversal of 20112343201 is 10234321102.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10234321102 = 2 ⋅5117160551.

It is not a de Polignac number, because 20112343201 - 2³³ = 11522408609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1058544379 = 20112343201 / (2 + 0 + 1 + 1 + 2 + 3 + 4 + 3 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112343241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529272171 + ... + 529272208.

It is an arithmetic number, because the mean of its divisors is an integer number (5292721900).

Almost surely, 2^20112343201 is an apocalyptic number.

It is an amenable number.

20112343201 is a deficient number, since it is larger than the sum of its proper divisors (1058544399).

20112343201 is a wasteful number, since it uses less digits than its factorization.

20112343201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058544398.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20112343201 its reverse (10234321102), we get a palindrome (30346664303).

The spelling of 20112343201 in words is "twenty billion, one hundred twelve million, three hundred forty-three thousand, two hundred one".