1130120020 has 12 divisors (see below), whose sum is σ = 2373252084. Its totient is φ = 452048000.

The previous prime is 1130120011. The next prime is 1130120059. The reversal of 1130120020 is 200210311.

It can be written as a sum of positive squares in 2 ways, for example, as 391802436 + 738317584 = 19794^2 + 27172^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1130119979 and 1130120006.

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 3 ways as a sum of consecutive naturals, for example, 28252981 + ... + 28253020.

It is an arithmetic number, because the mean of its divisors is an integer number (197771007).

Almost surely, 2^1130120020 is an apocalyptic number.

1130120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1130120020 is an abundant number, since it is smaller than the sum of its proper divisors (1243132064).

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

1130120020 is a wasteful number, since it uses less digits than its factorization.

1130120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56506010 (or 56506008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1130120020 is about 33617.2577703774. The cubic root of 1130120020 is about 1041.6173122501.

Adding to 1130120020 its reverse (200210311), we get a palindrome (1330330331).

The spelling of 1130120020 in words is "one billion, one hundred thirty million, one hundred twenty thousand, twenty".