22221202021110 has 24 divisors (see below), whose sum is σ = 57775125255120. Its totient is φ = 5925653872272.

The previous prime is 22221202021091. The next prime is 22221202021111. The reversal of 22221202021110 is 1112020212222.

It is a happy number.

22221202021110 is a `hidden beast` number, since 22 + 221 + 202 + 0 + 211 + 10 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221202021111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123451122250 + ... + 123451122429.

It is an arithmetic number, because the mean of its divisors is an integer number (2407296885630).

Almost surely, 2^{22221202021110} is an apocalyptic number.

22221202021110 is an abundant number, since it is smaller than the sum of its proper divisors (35553923234010).

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

22221202021110 is a wasteful number, since it uses less digits than its factorization.

22221202021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246902244692 (or 246902244689 counting only the distinct ones).

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

Adding to 22221202021110 its reverse (1112020212222), we get a palindrome (23333222233332).

The spelling of 22221202021110 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, twenty-one thousand, one hundred ten".