202102021202221 has 16 divisors (see below), whose sum is σ = 235595638914048. Its totient is φ = 169784090985600.

The previous prime is 202102021202209. The next prime is 202102021202227. The reversal of 202102021202221 is 122202120201202.

It is not a de Polignac number, because 202102021202221 - 2¹⁹ = 202102020677933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102021202227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842063005 + ... + 842302978.

It is an arithmetic number, because the mean of its divisors is an integer number (14724727432128).

Almost surely, 2^{202102021202221} is an apocalyptic number.

It is an amenable number.

202102021202221 is a deficient number, since it is larger than the sum of its proper divisors (33493617711827).

202102021202221 is a wasteful number, since it uses less digits than its factorization.

202102021202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684366332.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202102021202221 its reverse (122202120201202), we get a palindrome (324304141403423).

The spelling of 202102021202221 in words is "two hundred two trillion, one hundred two billion, twenty-one million, two hundred two thousand, two hundred twenty-one".