202121302133 has 2 divisors, whose sum is σ = 202121302134. Its totient is φ = 202121302132.

The previous prime is 202121302099. The next prime is 202121302177. The reversal of 202121302133 is 331203121202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194566563409 + 7554738724 = 441097^2 + 86918^2 .

It is a cyclic number.

It is not a de Polignac number, because 202121302133 - 2²⁶ = 202054193269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202121302333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060651066 + 101060651067.

It is an arithmetic number, because the mean of its divisors is an integer number (101060651067).

Almost surely, 2^202121302133 is an apocalyptic number.

It is an amenable number.

202121302133 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121302133 is an equidigital number, since it uses as much as digits as its factorization.

202121302133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 202121302133 its reverse (331203121202), we get a palindrome (533324423335).

The spelling of 202121302133 in words is "two hundred two billion, one hundred twenty-one million, three hundred two thousand, one hundred thirty-three".