210111122001222 has 192 divisors, whose sum is σ = 510656478433920. Its totient is φ = 62009631129600.

The previous prime is 210111122001091. The next prime is 210111122001233. The reversal of 210111122001222 is 222100221111012.

210111122001222 is a `hidden beast` number, since 210 + 1 + 1 + 11 + 220 + 0 + 1 + 222 = 666.

210111122001222 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210111122001222² (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 = 210111122001195 and 210111122001204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11053234854 + ... + 11053253862.

It is an arithmetic number, because the mean of its divisors is an integer number (2659669158510).

Almost surely, 2^{210111122001222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210111122001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255328239216960).

210111122001222 is an abundant number, since it is smaller than the sum of its proper divisors (300545356432698).

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

210111122001222 is a wasteful number, since it uses less digits than its factorization.

210111122001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37119 (or 37116 counting only the distinct ones).

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

Adding to 210111122001222 its reverse (222100221111012), we get a palindrome (432211343112234).

The spelling of 210111122001222 in words is "two hundred ten trillion, one hundred eleven billion, one hundred twenty-two million, one thousand, two hundred twenty-two".