211222100020201 has 6 divisors (see below), whose sum is σ = 224377801751870. Its totient is φ = 198797270606976.

The previous prime is 211222100020199. The next prime is 211222100020247. The reversal of 211222100020201 is 102020001222112.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 104664460219225 + 106557639800976 = 10230565^2 + 10322676^2 .

It is not a de Polignac number, because 211222100020201 - 2¹ = 211222100020199 is a prime.

It is a super-2 number, since 2×211222100020201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222100021201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365436158916 + ... + 365436159493.

Almost surely, 2^{211222100020201} is an apocalyptic number.

It is an amenable number.

211222100020201 is a deficient number, since it is larger than the sum of its proper divisors (13155701731669).

211222100020201 is an equidigital number, since it uses as much as digits as its factorization.

211222100020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730872318443 (or 730872318426 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211222100020201 its reverse (102020001222112), we get a palindrome (313242101242313).

The spelling of 211222100020201 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, twenty thousand, two hundred one".