1222222120110 has 256 divisors, whose sum is σ = 3506239457280. Its totient is φ = 301878835200.

The previous prime is 1222222120099. The next prime is 1222222120151. The reversal of 1222222120110 is 110212222221.

It is a happy number.

1222222120110 is a `hidden beast` number, since 12 + 222 + 221 + 201 + 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 an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 77411637 + ... + 77427423.

It is an arithmetic number, because the mean of its divisors is an integer number (13696247880).

Almost surely, 2^{1222222120110} is an apocalyptic number.

1222222120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222222120110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753119728640).

1222222120110 is an abundant number, since it is smaller than the sum of its proper divisors (2284017337170).

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

1222222120110 is a wasteful number, since it uses less digits than its factorization.

1222222120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16088 (or 16082 counting only the distinct ones).

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

Adding to 1222222120110 its reverse (110212222221), we get a palindrome (1332434342331).

The spelling of 1222222120110 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, one hundred ten".