1111211202222 has 96 divisors (see below), whose sum is σ = 2664578232576. Its totient is φ = 331879766400.

The previous prime is 1111211202203. The next prime is 1111211202281. The reversal of 1111211202222 is 2222021121111.

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 = 1111211202195 and 1111211202204.

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, 4174018 + ... + 4432250.

It is an arithmetic number, because the mean of its divisors is an integer number (27756023256).

Almost surely, 2^{1111211202222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111211202222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332289116288).

1111211202222 is an abundant number, since it is smaller than the sum of its proper divisors (1553367030354).

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

1111211202222 is a wasteful number, since it uses less digits than its factorization.

1111211202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258566 (or 258563 counting only the distinct ones).

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

Adding to 1111211202222 its reverse (2222021121111), we get a palindrome (3333232323333).

The spelling of 1111211202222 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred two thousand, two hundred twenty-two".