22121200222110 has 192 divisors, whose sum is σ = 65408294375424. Its totient is φ = 5334636931200.

The previous prime is 22121200222087. The next prime is 22121200222133. The reversal of 22121200222110 is 1122200212122.

It is a happy number.

22121200222110 is a `hidden beast` number, since 2 + 212 + 120 + 0 + 222 + 110 = 666.

It is an interprime number because it is at equal distance from previous prime (22121200222087) and next prime (22121200222133).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2938992 + ... + 7271868.

It is an arithmetic number, because the mean of its divisors is an integer number (340668199872).

Almost surely, 2^{22121200222110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121200222110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32704147187712).

22121200222110 is an abundant number, since it is smaller than the sum of its proper divisors (43287094153314).

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

22121200222110 is a wasteful number, since it uses less digits than its factorization.

22121200222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333101 (or 4333089 counting only the distinct ones).

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

Adding to 22121200222110 its reverse (1122200212122), we get a palindrome (23243400434232).

The spelling of 22121200222110 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, one hundred ten".