210222111222111 has 16 divisors (see below), whose sum is σ = 295048990828800. Its totient is φ = 132771673565568.

The previous prime is 210222111222091. The next prime is 210222111222121. The reversal of 210222111222111 is 111222111222012.

It is not a de Polignac number, because 210222111222111 - 2⁶ = 210222111222047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222111222121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46543510 + ... + 50860028.

It is an arithmetic number, because the mean of its divisors is an integer number (18440561926800).

Almost surely, 2^{210222111222111} is an apocalyptic number.

210222111222111 is a deficient number, since it is larger than the sum of its proper divisors (84826879606689).

210222111222111 is a wasteful number, since it uses less digits than its factorization.

210222111222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170958.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 210222111222111 its reverse (111222111222012), we get a palindrome (321444222444123).

Subtracting from 210222111222111 its reverse (111222111222012), we obtain a palindrome (99000000000099).

The spelling of 210222111222111 in words is "two hundred ten trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred eleven".