22122102210 has 128 divisors (see below), whose sum is σ = 61445309184. Its totient is φ = 5048524800.

The previous prime is 22122102139. The next prime is 22122102217. The reversal of 22122102210 is 1220122122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22122102210.

It is not an unprimeable number, because it can be changed into a prime (22122102217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 419310 + ... + 469110.

It is an arithmetic number, because the mean of its divisors is an integer number (480041478).

Almost surely, 2^22122102210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22122102210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30722654592).

22122102210 is an abundant number, since it is smaller than the sum of its proper divisors (39323206974).

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

22122102210 is a wasteful number, since it uses less digits than its factorization.

22122102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49908.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22122102210 its reverse (1220122122), we get a palindrome (23342224332).

The spelling of 22122102210 in words is "twenty-two billion, one hundred twenty-two million, one hundred two thousand, two hundred ten".