1020020112 has 60 divisors (see below), whose sum is σ = 2857128144. Its totient is φ = 339710400.

The previous prime is 1020020083. The next prime is 1020020129. The reversal of 1020020112 is 2110200201.

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 = 1020020094 and 1020020103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216987 + ... + 221637.

Almost surely, 2^1020020112 is an apocalyptic number.

1020020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020020112 is an abundant number, since it is smaller than the sum of its proper divisors (1837108032).

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

1020020112 is a wasteful number, since it uses less digits than its factorization.

1020020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188 (or 6179 counting only the distinct ones).

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

The square root of 1020020112 is about 31937.7537093641. The cubic root of 1020020112 is about 1006.6293255937.

Adding to 1020020112 its reverse (2110200201), we get a palindrome (3130220313).

The spelling of 1020020112 in words is "one billion, twenty million, twenty thousand, one hundred twelve".