211122201020221 has 8 divisors (see below), whose sum is σ = 218403290899800. Its totient is φ = 203841178739520.

The previous prime is 211122201020197. The next prime is 211122201020239. The reversal of 211122201020221 is 122020102221112.

It can be written as a sum of positive squares in 4 ways, for example, as 18873715783321 + 192248485236900 = 4344389^2 + 13865370^2 .

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 211122201020221 - 2²³ = 211122192631613 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 (211122201020251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10504666 + ... + 23077963.

It is an arithmetic number, because the mean of its divisors is an integer number (27300411362475).

Almost surely, 2^{211122201020221} is an apocalyptic number.

It is an amenable number.

211122201020221 is a deficient number, since it is larger than the sum of its proper divisors (7281089879579).

211122201020221 is a wasteful number, since it uses less digits than its factorization.

211122201020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33799439.

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

Adding to 211122201020221 its reverse (122020102221112), we get a palindrome (333142303241333).

The spelling of 211122201020221 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred one million, twenty thousand, two hundred twenty-one".