1112100021020 has 24 divisors (see below), whose sum is σ = 2338880221104. Its totient is φ = 444179022336.

The previous prime is 1112100021017. The next prime is 1112100021029. The reversal of 1112100021020 is 201200012111.

It is a junction number, because it is equal to n+sod(n) for n = 1112100020992 and 1112100021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112100021029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41297834 + ... + 41324753.

It is an arithmetic number, because the mean of its divisors is an integer number (97453342546).

Almost surely, 2^{1112100021020} is an apocalyptic number.

1112100021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112100021020 is an abundant number, since it is smaller than the sum of its proper divisors (1226780200084).

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

1112100021020 is a wasteful number, since it uses less digits than its factorization.

1112100021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82623269 (or 82623267 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1112100021020 its reverse (201200012111), we get a palindrome (1313300033131).

The spelling of 1112100021020 in words is "one trillion, one hundred twelve billion, one hundred million, twenty-one thousand, twenty".