202102132243 has 4 divisors (see below), whose sum is σ = 220475053368. Its totient is φ = 183729211120.

The previous prime is 202102132187. The next prime is 202102132283. The reversal of 202102132243 is 342231201202.

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 202102132243 - 2⁹ = 202102131731 is a prime.

It is a super-2 number, since 2×202102132243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202102132283) 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, 9186460546 + ... + 9186460567.

It is an arithmetic number, because the mean of its divisors is an integer number (55118763342).

Almost surely, 2^202102132243 is an apocalyptic number.

202102132243 is a deficient number, since it is larger than the sum of its proper divisors (18372921125).

202102132243 is a wasteful number, since it uses less digits than its factorization.

202102132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18372921124.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 202102132243 its reverse (342231201202), we get a palindrome (544333333445).

The spelling of 202102132243 in words is "two hundred two billion, one hundred two million, one hundred thirty-two thousand, two hundred forty-three".