111002211120020 has 72 divisors (see below), whose sum is σ = 256253717466600. Its totient is φ = 40359516088320.

The previous prime is 111002211119981. The next prime is 111002211120061. The reversal of 111002211120020 is 20021112200111.

It can be written as a sum of positive squares in 4 ways, for example, as 7446065647504 + 103556145472516 = 2728748^2 + 10176254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111002211119977 and 111002211120004.

It is a congruent number.

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, 17071976 + ... + 22659584.

Almost surely, 2^{111002211120020} is an apocalyptic number.

111002211120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111002211120020 is an abundant number, since it is smaller than the sum of its proper divisors (145251506346580).

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

111002211120020 is a wasteful number, since it uses less digits than its factorization.

111002211120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595849 (or 5595836 counting only the distinct ones).

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

Adding to 111002211120020 its reverse (20021112200111), we get a palindrome (131023323320131).

The spelling of 111002211120020 in words is "one hundred eleven trillion, two billion, two hundred eleven million, one hundred twenty thousand, twenty".