211202112210221 has 8 divisors (see below), whose sum is σ = 230402764052064. Its totient is φ = 192001537005520.

The previous prime is 211202112210209. The next prime is 211202112210239. The reversal of 211202112210221 is 122012211202112.

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

It is not a de Polignac number, because 211202112210221 - 2⁴² = 206804065699117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211202112210193 and 211202112210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202112210281) 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 7 ways as a sum of consecutive naturals, for example, 13319615 + ... + 24491148.

It is an arithmetic number, because the mean of its divisors is an integer number (28800345506508).

Almost surely, 2^{211202112210221} is an apocalyptic number.

It is an amenable number.

211202112210221 is a deficient number, since it is larger than the sum of its proper divisors (19200651841843).

211202112210221 is a wasteful number, since it uses less digits than its factorization.

211202112210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38318571.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211202112210221 its reverse (122012211202112), we get a palindrome (333214323412333).

The spelling of 211202112210221 in words is "two hundred eleven trillion, two hundred two billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".