202110134243 has 4 divisors (see below), whose sum is σ = 210897531408. Its totient is φ = 193322737080.

The previous prime is 202110134221. The next prime is 202110134249. The reversal of 202110134243 is 342431011202.

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

It is a cyclic number.

It is not a de Polignac number, because 202110134243 - 2⁶ = 202110134179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 8787397141 = 202110134243 / (2 + 0 + 2 + 1 + 1 + 0 + 1 + 3 + 4 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202110134249) 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, 4393698548 + ... + 4393698593.

It is an arithmetic number, because the mean of its divisors is an integer number (52724382852).

Almost surely, 2^202110134243 is an apocalyptic number.

202110134243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

202110134243 is a deficient number, since it is larger than the sum of its proper divisors (8787397165).

202110134243 is an equidigital number, since it uses as much as digits as its factorization.

202110134243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8787397164.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 202110134243 its reverse (342431011202), we get a palindrome (544541145445).

The spelling of 202110134243 in words is "two hundred two billion, one hundred ten million, one hundred thirty-four thousand, two hundred forty-three".