11112100021220 has 48 divisors (see below), whose sum is σ = 25515875702016. Its totient is φ = 4031388288000.

The previous prime is 11112100021219. The next prime is 11112100021277. The reversal of 11112100021220 is 2212000121111.

It is a junction number, because it is equal to n+sod(n) for n = 11112100021195 and 11112100021204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58500941 + ... + 58690580.

It is an arithmetic number, because the mean of its divisors is an integer number (531580743792).

Almost surely, 2^{11112100021220} is an apocalyptic number.

11112100021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112100021220 is an abundant number, since it is smaller than the sum of its proper divisors (14403775680796).

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

11112100021220 is a wasteful number, since it uses less digits than its factorization.

11112100021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117191972 (or 117191970 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11112100021220 its reverse (2212000121111), we get a palindrome (13324100142331).

The spelling of 11112100021220 in words is "eleven trillion, one hundred twelve billion, one hundred million, twenty-one thousand, two hundred twenty".