1122020020 has 48 divisors (see below), whose sum is σ = 2573661888. Its totient is φ = 407496960.

The previous prime is 1122019973. The next prime is 1122020021. The reversal of 1122020020 is 200202211.

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 = 1122019979 and 1122020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122020021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 203419 + ... + 208861.

It is an arithmetic number, because the mean of its divisors is an integer number (53617956).

Almost surely, 2^1122020020 is an apocalyptic number.

1122020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122020020 is an abundant number, since it is smaller than the sum of its proper divisors (1451641868).

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

1122020020 is a wasteful number, since it uses less digits than its factorization.

1122020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6398 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1122020020 is about 33496.5672868131. The cubic root of 1122020020 is about 1039.1227871757.

Adding to 1122020020 its reverse (200202211), we get a palindrome (1322222231).

The spelling of 1122020020 in words is "one billion, one hundred twenty-two million, twenty thousand, twenty".