111211320101202 has 128 divisors (see below), whose sum is σ = 258049994400000. Its totient is φ = 35457416741376.

The previous prime is 111211320101131. The next prime is 111211320101227. The reversal of 111211320101202 is 202101023112111.

It is a happy number.

111211320101202 is a `hidden beast` number, since 1 + 1 + 1 + 211 + 320 + 10 + 120 + 2 = 666.

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

It is an unprimeable number.

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, 1001406174 + ... + 1001517222.

It is an arithmetic number, because the mean of its divisors is an integer number (2016015581250).

Almost surely, 2^{111211320101202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111211320101202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129024997200000).

111211320101202 is an abundant number, since it is smaller than the sum of its proper divisors (146838674298798).

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

111211320101202 is a wasteful number, since it uses less digits than its factorization.

111211320101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117065 (or 117059 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111211320101202 its reverse (202101023112111), we get a palindrome (313312343213313).

The spelling of 111211320101202 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred twenty million, one hundred one thousand, two hundred two".