111022202111220 has 144 divisors (see below), whose sum is σ = 345881364388560. Its totient is φ = 28804744654848.

The previous prime is 111022202111203. The next prime is 111022202111221. The reversal of 111022202111220 is 22111202220111.

111022202111220 is a `hidden beast` number, since 1 + 1 + 10 + 2 + 220 + 211 + 1 + 220 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19558647770256 + 91463554340964 = 4422516^2 + 9563658^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 111022202111193 and 111022202111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022202111221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198675166 + ... + 199233194.

It is an arithmetic number, because the mean of its divisors is an integer number (2401953919365).

Almost surely, 2^{111022202111220} is an apocalyptic number.

111022202111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111022202111220 is an abundant number, since it is smaller than the sum of its proper divisors (234859162277340).

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

111022202111220 is a wasteful number, since it uses less digits than its factorization.

111022202111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587954 (or 587949 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111022202111220 its reverse (22111202220111), we get a palindrome (133133404331331).

The spelling of 111022202111220 in words is "one hundred eleven trillion, twenty-two billion, two hundred two million, one hundred eleven thousand, two hundred twenty".