20020132243 has 4 divisors (see below), whose sum is σ = 20021046808. Its totient is φ = 20019217680.

The previous prime is 20020132241. The next prime is 20020132273. The reversal of 20020132243 is 34223102002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34223102002 = 2 ⋅17111551001.

It is a cyclic number.

It is not a de Polignac number, because 20020132243 - 2¹ = 20020132241 is a prime.

It is a super-2 number, since 2×20020132243² (a number of 21 digits) contains 22 as substring.

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 20020132243.

It is not an unprimeable number, because it can be changed into a prime (20020132241) 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, 423621 + ... + 468502.

It is an arithmetic number, because the mean of its divisors is an integer number (5005261702).

Almost surely, 2^20020132243 is an apocalyptic number.

20020132243 is a deficient number, since it is larger than the sum of its proper divisors (914565).

20020132243 is an equidigital number, since it uses as much as digits as its factorization.

20020132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914564.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20020132243 its reverse (34223102002), we get a palindrome (54243234245).

The spelling of 20020132243 in words is "twenty billion, twenty million, one hundred thirty-two thousand, two hundred forty-three".