1122222020 has 48 divisors (see below), whose sum is σ = 2500460928. Its totient is φ = 421608960.

The previous prime is 1122222007. The next prime is 1122222089. The reversal of 1122222020 is 202222211.

It is a junction number, because it is equal to n+sod(n) for n = 1122221986 and 1122222004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174665 + ... + 180975.

It is an arithmetic number, because the mean of its divisors is an integer number (52092936).

Almost surely, 2^1122222020 is an apocalyptic number.

1122222020 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 1122222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250230464).

1122222020 is an abundant number, since it is smaller than the sum of its proper divisors (1378238908).

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

1122222020 is a wasteful number, since it uses less digits than its factorization.

1122222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6860 (or 6858 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1122222020 is about 33499.5823854567. The cubic root of 1122222020 is about 1039.1851420369.

Adding to 1122222020 its reverse (202222211), we get a palindrome (1324444231).

The spelling of 1122222020 in words is "one billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty".