22221212020110 has 288 divisors, whose sum is σ = 61725313016640. Its totient is φ = 5545199886336.

The previous prime is 22221212019967. The next prime is 22221212020141. The reversal of 22221212020110 is 1102021212222.

It is a happy number.

22221212020110 is a `hidden beast` number, since 22 + 221 + 212 + 0 + 201 + 10 = 666.

It is a super-2 number, since 2×22221212020110² (a number of 27 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5024011359 + ... + 5024015781.

It is an arithmetic number, because the mean of its divisors is an integer number (214324003530).

Almost surely, 2^{22221212020110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221212020110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30862656508320).

22221212020110 is an abundant number, since it is smaller than the sum of its proper divisors (39504100996530).

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

22221212020110 is a wasteful number, since it uses less digits than its factorization.

22221212020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5512 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22221212020110 its reverse (1102021212222), we get a palindrome (23323233232332).

The spelling of 22221212020110 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, twenty thousand, one hundred ten".