111303211001220 has 72 divisors (see below), whose sum is σ = 385851131475264. Its totient is φ = 25440733942848.

The previous prime is 111303211001183. The next prime is 111303211001243. The reversal of 111303211001220 is 22100112303111.

111303211001220 is a `hidden beast` number, since 1 + 113 + 0 + 321 + 10 + 0 + 1 + 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 = 111303211001193 and 111303211001202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44167939614 + ... + 44167942133.

It is an arithmetic number, because the mean of its divisors is an integer number (5359043492712).

Almost surely, 2^{111303211001220} is an apocalyptic number.

111303211001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111303211001220 is an abundant number, since it is smaller than the sum of its proper divisors (274547920474044).

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

111303211001220 is a wasteful number, since it uses less digits than its factorization.

111303211001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88335881769 (or 88335881764 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111303211001220 its reverse (22100112303111), we get a palindrome (133403323304331).

The spelling of 111303211001220 in words is "one hundred eleven trillion, three hundred three billion, two hundred eleven million, one thousand, two hundred twenty".