111001110001220 has 12 divisors (see below), whose sum is σ = 233102331002604. Its totient is φ = 44400444000480.

The previous prime is 111001110001219. The next prime is 111001110001253. The reversal of 111001110001220 is 22100011100111.

It can be written as a sum of positive squares in 2 ways, for example, as 44833817989636 + 66167292011584 = 6695806^2 + 8134328^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775027750011 + ... + 2775027750050.

It is an arithmetic number, because the mean of its divisors is an integer number (19425194250217).

Almost surely, 2^{111001110001220} is an apocalyptic number.

111001110001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001110001220 is an abundant number, since it is smaller than the sum of its proper divisors (122101221001384).

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

111001110001220 is a wasteful number, since it uses less digits than its factorization.

111001110001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550055500070 (or 5550055500068 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111001110001220 its reverse (22100011100111), we get a palindrome (133101121101331).

The spelling of 111001110001220 in words is "one hundred eleven trillion, one billion, one hundred ten million, one thousand, two hundred twenty".