210122222011 has 4 divisors (see below), whose sum is σ = 226285469872. Its totient is φ = 193958974152.

The previous prime is 210122221993. The next prime is 210122222017. The reversal of 210122222011 is 110222221012.

It is a happy number.

210122222011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210122222011 - 2¹⁷ = 210122090939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122222017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8081623911 + ... + 8081623936.

It is an arithmetic number, because the mean of its divisors is an integer number (56571367468).

Almost surely, 2^210122222011 is an apocalyptic number.

210122222011 is a deficient number, since it is larger than the sum of its proper divisors (16163247861).

210122222011 is a wasteful number, since it uses less digits than its factorization.

210122222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16163247860.

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

Adding to 210122222011 its reverse (110222221012), we get a palindrome (320344443023).

Subtracting from 210122222011 its reverse (110222221012), we obtain a palindrome (99900000999).

It can be divided in two parts, 210 and 122222011, that added together give a palindrome (122222221).

The spelling of 210122222011 in words is "two hundred ten billion, one hundred twenty-two million, two hundred twenty-two thousand, eleven".