201210210111222 has 144 divisors (see below), whose sum is σ = 480104471246400. Its totient is φ = 60857292075840.

The previous prime is 201210210111181. The next prime is 201210210111269. The reversal of 201210210111222 is 222111012012102.

201210210111222 is a `hidden beast` number, since 2 + 0 + 121 + 0 + 210 + 111 + 222 = 666.

It is a super-2 number, since 2×201210210111222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201210210111195 and 201210210111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3456537697 + ... + 3456595907.

It is an arithmetic number, because the mean of its divisors is an integer number (3334058828100).

Almost surely, 2^{201210210111222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201210210111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240052235623200).

201210210111222 is an abundant number, since it is smaller than the sum of its proper divisors (278894261135178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201210210111222 is a wasteful number, since it uses less digits than its factorization.

201210210111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77563 (or 77547 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201210210111222 its reverse (222111012012102), we get a palindrome (423321222123324).

The spelling of 201210210111222 in words is "two hundred one trillion, two hundred ten billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-two".