111211111202202 has 256 divisors, whose sum is σ = 279429002035200. Its totient is φ = 32495163180480.

The previous prime is 111211111202173. The next prime is 111211111202227. The reversal of 111211111202202 is 202202111112111.

It is a happy number.

111211111202202 is a `hidden beast` number, since 111 + 211 + 1 + 1 + 120 + 220 + 2 = 666.

It is a super-2 number, since 2×111211111202202² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1021102233 + ... + 1021211139.

It is an arithmetic number, because the mean of its divisors is an integer number (1091519539200).

Almost surely, 2^{111211111202202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111211111202202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139714501017600).

111211111202202 is an abundant number, since it is smaller than the sum of its proper divisors (168217890832998).

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

111211111202202 is a wasteful number, since it uses less digits than its factorization.

111211111202202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109518 (or 109512 counting only the distinct ones).

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

Adding to 111211111202202 its reverse (202202111112111), we get a palindrome (313413222314313).

Subtracting 111211111202202 from its reverse (202202111112111), we obtain a palindrome (90990999909909).

The spelling of 111211111202202 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred eleven million, two hundred two thousand, two hundred two".