1122020000 has 60 divisors (see below), whose sum is σ = 2760386706. Its totient is φ = 448800000.

The previous prime is 1122019973. The next prime is 1122020021. The reversal of 1122020000 is 202211.

It can be written as a sum of positive squares in 5 ways, for example, as 37503376 + 1084516624 = 6124^2 + 32932^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1122020000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8051 + ... + 48050.

Almost surely, 2^1122020000 is an apocalyptic number.

1122020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122020000 is an abundant number, since it is smaller than the sum of its proper divisors (1638366706).

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

1122020000 is an frugal number, since it uses more digits than its factorization.

1122020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56131 (or 56108 counting only the distinct ones).

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

The square root of 1122020000 is about 33496.5669882751. The cubic root of 1122020000 is about 1039.1227810016.

Adding to 1122020000 its reverse (202211), we get a palindrome (1122222211).

The spelling of 1122020000 in words is "one billion, one hundred twenty-two million, twenty thousand".