111222111002220 has 144 divisors (see below), whose sum is σ = 347172687126720. Its totient is φ = 28800933170688.

The previous prime is 111222111002147. The next prime is 111222111002231. The reversal of 111222111002220 is 22200111222111.

111222111002220 is a `hidden beast` number, since 1 + 112 + 221 + 110 + 0 + 2 + 220 = 666.

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 = 111222111002193 and 111222111002202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13014792 + ... + 19794671.

It is an arithmetic number, because the mean of its divisors is an integer number (2410921438380).

Almost surely, 2^{111222111002220} is an apocalyptic number.

111222111002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222111002220 is an abundant number, since it is smaller than the sum of its proper divisors (235950576124500).

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

111222111002220 is a wasteful number, since it uses less digits than its factorization.

111222111002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32810024 (or 32810019 counting only the distinct ones).

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

Adding to 111222111002220 its reverse (22200111222111), we get a palindrome (133422222224331).

The spelling of 111222111002220 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, two thousand, two hundred twenty".