202421131133 has 4 divisors (see below), whose sum is σ = 217991987388. Its totient is φ = 186850274880.

The previous prime is 202421131091. The next prime is 202421131153. The reversal of 202421131133 is 331131124202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89402794009 + 113018337124 = 299003^2 + 336182^2 .

It is a cyclic number.

It is not a de Polignac number, because 202421131133 - 2¹² = 202421127037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202421131099 and 202421131108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202421131153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7785428108 + ... + 7785428133.

It is an arithmetic number, because the mean of its divisors is an integer number (54497996847).

Almost surely, 2^202421131133 is an apocalyptic number.

It is an amenable number.

202421131133 is a deficient number, since it is larger than the sum of its proper divisors (15570856255).

202421131133 is a wasteful number, since it uses less digits than its factorization.

202421131133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570856254.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 202421131133 its reverse (331131124202), we get a palindrome (533552255335).

The spelling of 202421131133 in words is "two hundred two billion, four hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty-three".