111101211212202 has 128 divisors (see below), whose sum is σ = 259851568838400. Its totient is φ = 35151924326400.

The previous prime is 111101211212183. The next prime is 111101211212209. The reversal of 111101211212202 is 202212112101111.

It is a happy number.

111101211212202 is a `hidden beast` number, since 111 + 101 + 211 + 21 + 220 + 2 = 666.

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 (111101211212209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8286552 + ... + 17054892.

It is an arithmetic number, because the mean of its divisors is an integer number (2030090381550).

Almost surely, 2^{111101211212202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111101211212202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129925784419200).

111101211212202 is an abundant number, since it is smaller than the sum of its proper divisors (148750357626198).

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

111101211212202 is a wasteful number, since it uses less digits than its factorization.

111101211212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768549 (or 8768543 counting only the distinct ones).

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

Adding to 111101211212202 its reverse (202212112101111), we get a palindrome (313313323313313).

The spelling of 111101211212202 in words is "one hundred eleven trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, two hundred two".