1011020112 has 60 divisors (see below), whose sum is σ = 2920737664. Its totient is φ = 326134080.

The previous prime is 1011020099. The next prime is 1011020123. The reversal of 1011020112 is 2110201101.

It is a happy number.

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 = 1011020094 and 1011020103.

It is a congruent number.

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, 108778 + ... + 117705.

Almost surely, 2^1011020112 is an apocalyptic number.

1011020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011020112 is an abundant number, since it is smaller than the sum of its proper divisors (1909717552).

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

1011020112 is a wasteful number, since it uses less digits than its factorization.

1011020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226528 (or 226519 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1011020112 is about 31796.5424535436. The cubic root of 1011020112 is about 1003.6599590245.

Adding to 1011020112 its reverse (2110201101), we get a palindrome (3121221213).

The spelling of 1011020112 in words is "one billion, eleven million, twenty thousand, one hundred twelve".