1120102020 has 120 divisors (see below), whose sum is σ = 3573662400. Its totient is φ = 293606208.

The previous prime is 1120101977. The next prime is 1120102033. The reversal of 1120102020 is 202010211.

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 = 1120101993 and 1120102011.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89721 + ... + 101439.

It is an arithmetic number, because the mean of its divisors is an integer number (29780520).

Almost surely, 2^1120102020 is an apocalyptic number.

1120102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1786831200).

1120102020 is an abundant number, since it is smaller than the sum of its proper divisors (2453560380).

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

1120102020 is a wasteful number, since it uses less digits than its factorization.

1120102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11799 (or 11788 counting only the distinct ones).

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

The square root of 1120102020 is about 33467.9252419387. The cubic root of 1120102020 is about 1038.5303514514.

Adding to 1120102020 its reverse (202010211), we get a palindrome (1322112231).

The spelling of 1120102020 in words is "one billion, one hundred twenty million, one hundred two thousand, twenty".