111001212012220 has 24 divisors (see below), whose sum is σ = 233118480117600. Its totient is φ = 44397449587392.

The previous prime is 111001212012157. The next prime is 111001212012227. The reversal of 111001212012220 is 22210212100111.

It is a junction number, because it is equal to n+sod(n) for n = 111001212012194 and 111001212012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001212012227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189401200 + ... + 189986359.

It is an arithmetic number, because the mean of its divisors is an integer number (9713270004900).

Almost surely, 2^{111001212012220} is an apocalyptic number.

111001212012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001212012220 is an abundant number, since it is smaller than the sum of its proper divisors (122117268105380).

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

111001212012220 is a wasteful number, since it uses less digits than its factorization.

111001212012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379402197 (or 379402195 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111001212012220 its reverse (22210212100111), we get a palindrome (133211424112331).

The spelling of 111001212012220 in words is "one hundred eleven trillion, one billion, two hundred twelve million, twelve thousand, two hundred twenty".