211222022221201 has 4 divisors (see below), whose sum is σ = 211222065789504. Its totient is φ = 211221978652900.

The previous prime is 211222022221169. The next prime is 211222022221247. The reversal of 211222022221201 is 102122220222112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211222022221201 - 2⁵ = 211222022221169 is a prime.

It is a super-2 number, since 2×211222022221201² (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 (211222022221261) 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 3 ways as a sum of consecutive naturals, for example, 13448965 + ... + 24562546.

It is an arithmetic number, because the mean of its divisors is an integer number (52805516447376).

Almost surely, 2^{211222022221201} is an apocalyptic number.

It is an amenable number.

211222022221201 is a deficient number, since it is larger than the sum of its proper divisors (43568303).

211222022221201 is an equidigital number, since it uses as much as digits as its factorization.

211222022221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43568302.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211222022221201 its reverse (102122220222112), we get a palindrome (313344242443313).

The spelling of 211222022221201 in words is "two hundred eleven trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty-one thousand, two hundred one".