111120101220 has 48 divisors (see below), whose sum is σ = 327511880640. Its totient is φ = 28072446336.

The previous prime is 111120101179. The next prime is 111120101221. The reversal of 111120101220 is 22101021111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111120101196 and 111120101205.

It is not an unprimeable number, because it can be changed into a prime (111120101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48735747 + ... + 48738026.

It is an arithmetic number, because the mean of its divisors is an integer number (6823164180).

Almost surely, 2^111120101220 is an apocalyptic number.

111120101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120101220 is an abundant number, since it is smaller than the sum of its proper divisors (216391779420).

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

111120101220 is a wasteful number, since it uses less digits than its factorization.

111120101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97473804 (or 97473802 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111120101220 its reverse (22101021111), we get a palindrome (133221122331).

The spelling of 111120101220 in words is "one hundred eleven billion, one hundred twenty million, one hundred one thousand, two hundred twenty".