111021111221202 has 144 divisors (see below), whose sum is σ = 309487423196952. Its totient is φ = 28488933688320.

The previous prime is 111021111221179. The next prime is 111021111221203. The reversal of 111021111221202 is 202122111120111.

It is a happy number.

111021111221202 is a `hidden beast` number, since 1 + 110 + 21 + 111 + 221 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 97085964074841 + 13935147146361 = 9853221^2 + 3732981^2 .

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

It is not an unprimeable number, because it can be changed into a prime (111021111221203) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130422199 + ... + 131270682.

Almost surely, 2^{111021111221202} is an apocalyptic number.

111021111221202 is an abundant number, since it is smaller than the sum of its proper divisors (198466311975750).

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

111021111221202 is a wasteful number, since it uses less digits than its factorization.

111021111221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261692953 (or 261692943 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111021111221202 its reverse (202122111120111), we get a palindrome (313143222341313).

The spelling of 111021111221202 in words is "one hundred eleven trillion, twenty-one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred two".