111121022202112 has 144 divisors (see below), whose sum is σ = 243472310928000. Its totient is φ = 50302475845632.

The previous prime is 111121022202067. The next prime is 111121022202121. The reversal of 111121022202112 is 211202220121111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111121022202112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85553964 + ... + 86843092.

It is an arithmetic number, because the mean of its divisors is an integer number (1690779937000).

Almost surely, 2^{111121022202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111121022202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121736155464000).

111121022202112 is an abundant number, since it is smaller than the sum of its proper divisors (132351288725888).

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

111121022202112 is a wasteful number, since it uses less digits than its factorization.

111121022202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289656 (or 1289642 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111121022202112 its reverse (211202220121111), we get a palindrome (322323242323223).

The spelling of 111121022202112 in words is "one hundred eleven trillion, one hundred twenty-one billion, twenty-two million, two hundred two thousand, one hundred twelve".