210222211211111 has 32 divisors (see below), whose sum is σ = 246568866739200. Its totient is φ = 177101631705600.

The previous prime is 210222211211063. The next prime is 210222211211137. The reversal of 210222211211111 is 111112112222012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210222211211111 - 2³⁸ = 209947333304167 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 (210222211211911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407411 + ... + 20508788.

It is an arithmetic number, because the mean of its divisors is an integer number (7705277085600).

Almost surely, 2^{210222211211111} is an apocalyptic number.

210222211211111 is a deficient number, since it is larger than the sum of its proper divisors (36346655528089).

210222211211111 is a wasteful number, since it uses less digits than its factorization.

210222211211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20917055.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 210222211211111 its reverse (111112112222012), we get a palindrome (321334323433123).

The spelling of 210222211211111 in words is "two hundred ten trillion, two hundred twenty-two billion, two hundred eleven million, two hundred eleven thousand, one hundred eleven".