1111102221222 has 48 divisors (see below), whose sum is σ = 2751398357760. Its totient is φ = 317446513776.

The previous prime is 1111102221197. The next prime is 1111102221259. The reversal of 1111102221222 is 2221222011111.

1111102221222 is a `hidden beast` number, since 111 + 110 + 2 + 221 + 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 = 1111102221195 and 1111102221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3805413 + ... + 4086975.

It is an arithmetic number, because the mean of its divisors is an integer number (57320799120).

Almost surely, 2^{1111102221222} is an apocalyptic number.

1111102221222 is an abundant number, since it is smaller than the sum of its proper divisors (1640296136538).

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

1111102221222 is a wasteful number, since it uses less digits than its factorization.

1111102221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312897 (or 312894 counting only the distinct ones).

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

Adding to 1111102221222 its reverse (2221222011111), we get a palindrome (3332324232333).

It can be divided in two parts, 111110 and 2221222, that added together give a palindrome (2332332).

The spelling of 1111102221222 in words is "one trillion, one hundred eleven billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-two".