1112020020 has 36 divisors (see below), whose sum is σ = 3373127940. Its totient is φ = 296538624.

The previous prime is 1112019991. The next prime is 1112020043. The reversal of 1112020020 is 200202111.

It can be written as a sum of positive squares in 2 ways, for example, as 657307044 + 454712976 = 25638^2 + 21324^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1112020020³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1112019984 and 1112020011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3088765 + ... + 3089124.

Almost surely, 2^1112020020 is an apocalyptic number.

1112020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112020020 is an abundant number, since it is smaller than the sum of its proper divisors (2261107920).

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

1112020020 is a wasteful number, since it uses less digits than its factorization.

1112020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177904 (or 6177899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1112020020 is about 33346.9641796671. The cubic root of 1112020020 is about 1036.0265108027.

Adding to 1112020020 its reverse (200202111), we get a palindrome (1312222131).

The spelling of 1112020020 in words is "one billion, one hundred twelve million, twenty thousand, twenty".