22111122201210 has 192 divisors, whose sum is σ = 71446596279552. Its totient is φ = 4628119431168.

The previous prime is 22111122201197. The next prime is 22111122201211. The reversal of 22111122201210 is 1210222111122.

22111122201210 is a `hidden beast` number, since 2 + 211 + 112 + 220 + 121 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22111122201211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27502792 + ... + 28295331.

It is an arithmetic number, because the mean of its divisors is an integer number (372117688956).

Almost surely, 2^{22111122201210} is an apocalyptic number.

22111122201210 is an abundant number, since it is smaller than the sum of its proper divisors (49335474078342).

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

22111122201210 is a wasteful number, since it uses less digits than its factorization.

22111122201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55798197 (or 55798194 counting only the distinct ones).

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

Adding to 22111122201210 its reverse (1210222111122), we get a palindrome (23321344312332).

The spelling of 22111122201210 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred one thousand, two hundred ten".