202011202112221 has 8 divisors (see below), whose sum is σ = 202656689235000. Its totient is φ = 201366420057600.

The previous prime is 202011202112183. The next prime is 202011202112243. The reversal of 202011202112221 is 122211202110202.

It can be written as a sum of positive squares in 4 ways, for example, as 44164996205625 + 157846205906596 = 6645675^2 + 12563686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202011202112221 - 2⁹ = 202011202111709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011242112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175693096 + ... + 176839153.

It is an arithmetic number, because the mean of its divisors is an integer number (25332086154375).

Almost surely, 2^{202011202112221} is an apocalyptic number.

It is an amenable number.

202011202112221 is a deficient number, since it is larger than the sum of its proper divisors (645487122779).

202011202112221 is a wasteful number, since it uses less digits than its factorization.

202011202112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352534079.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202011202112221 its reverse (122211202110202), we get a palindrome (324222404222423).

The spelling of 202011202112221 in words is "two hundred two trillion, eleven billion, two hundred two million, one hundred twelve thousand, two hundred twenty-one".