1120120020 has 72 divisors (see below), whose sum is σ = 3461834376. Its totient is φ = 293060352.

The previous prime is 1120120019. The next prime is 1120120063. The reversal of 1120120020 is 200210211.

It can be written as a sum of positive squares in 4 ways, for example, as 406909584 + 713210436 = 20172^2 + 26706^2 .

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 = 1120119984 and 1120120011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49167 + ... + 68246.

It is an arithmetic number, because the mean of its divisors is an integer number (48081033).

Almost surely, 2^1120120020 is an apocalyptic number.

1120120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120120020 is an abundant number, since it is smaller than the sum of its proper divisors (2341714356).

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

1120120020 is a wasteful number, since it uses less digits than its factorization.

1120120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117481 (or 117476 counting only the distinct ones).

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

The square root of 1120120020 is about 33468.1941550482. The cubic root of 1120120020 is about 1038.5359144704.

Adding to 1120120020 its reverse (200210211), we get a palindrome (1320330231).

The spelling of 1120120020 in words is "one billion, one hundred twenty million, one hundred twenty thousand, twenty".