202124242231 has 4 divisors (see below), whose sum is σ = 202126018464. Its totient is φ = 202122466000.

The previous prime is 202124242211. The next prime is 202124242237. The reversal of 202124242231 is 132242421202.

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 202124242231 - 2²¹ = 202122145079 is a prime.

It is a super-2 number, since 2×202124242231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202124242196 and 202124242205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202124242237) 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, 704815 + ... + 949216.

It is an arithmetic number, because the mean of its divisors is an integer number (50531504616).

Almost surely, 2^202124242231 is an apocalyptic number.

202124242231 is a deficient number, since it is larger than the sum of its proper divisors (1776233).

202124242231 is a wasteful number, since it uses less digits than its factorization.

202124242231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776232.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 202124242231 its reverse (132242421202), we get a palindrome (334366663433).

The spelling of 202124242231 in words is "two hundred two billion, one hundred twenty-four million, two hundred forty-two thousand, two hundred thirty-one".