111021100022220 has 24 divisors (see below), whose sum is σ = 310859080062384. Its totient is φ = 29605626672576.

The previous prime is 111021100022213. The next prime is 111021100022221. The reversal of 111021100022220 is 22220001120111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111021100022220.

It is not an unprimeable number, because it can be changed into a prime (111021100022221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925175833459 + ... + 925175833578.

It is an arithmetic number, because the mean of its divisors is an integer number (12952461669266).

Almost surely, 2^{111021100022220} is an apocalyptic number.

111021100022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021100022220 is an abundant number, since it is smaller than the sum of its proper divisors (199837980040164).

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

111021100022220 is a wasteful number, since it uses less digits than its factorization.

111021100022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850351667049 (or 1850351667047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111021100022220 its reverse (22220001120111), we get a palindrome (133241101142331).

The spelling of 111021100022220 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, twenty-two thousand, two hundred twenty".