20112322143 has 4 divisors (see below), whose sum is σ = 26816429528. Its totient is φ = 13408214760.

The previous prime is 20112322129. The next prime is 20112322183. The reversal of 20112322143 is 34122321102.

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

It is not a de Polignac number, because 20112322143 - 2⁶ = 20112322079 is a prime.

It is a super-2 number, since 2×20112322143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112322123) 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, 3352053688 + ... + 3352053693.

It is an arithmetic number, because the mean of its divisors is an integer number (6704107382).

Almost surely, 2^20112322143 is an apocalyptic number.

20112322143 is a deficient number, since it is larger than the sum of its proper divisors (6704107385).

20112322143 is an equidigital number, since it uses as much as digits as its factorization.

20112322143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6704107384.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20112322143 its reverse (34122321102), we get a palindrome (54234643245).

The spelling of 20112322143 in words is "twenty billion, one hundred twelve million, three hundred twenty-two thousand, one hundred forty-three".