1110212121222 has 96 divisors (see below), whose sum is σ = 2617249156704. Its totient is φ = 338699750400.

The previous prime is 1110212121203. The next prime is 1110212121247. The reversal of 1110212121222 is 2221212120111.

1110212121222 is a `hidden beast` number, since 1 + 110 + 212 + 121 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1110212121195 and 1110212121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21043897 + ... + 21096587.

It is an arithmetic number, because the mean of its divisors is an integer number (27263012049).

Almost surely, 2^{1110212121222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1110212121222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308624578352).

1110212121222 is an abundant number, since it is smaller than the sum of its proper divisors (1507037035482).

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

1110212121222 is a wasteful number, since it uses less digits than its factorization.

1110212121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54614 (or 54611 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1110212121222 its reverse (2221212120111), we get a palindrome (3331424241333).

The spelling of 1110212121222 in words is "one trillion, one hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twenty-two".