1122345020 has 12 divisors (see below), whose sum is σ = 2356924584. Its totient is φ = 448938000.

The previous prime is 1122345019. The next prime is 1122345047. The reversal of 1122345020 is 205432211.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 56117251 = 1122345020 / (1 + 1 + 2 + 2 + 3 + 4 + 5 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1122344983 and 1122345001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28058606 + ... + 28058645.

It is an arithmetic number, because the mean of its divisors is an integer number (196410382).

Almost surely, 2^1122345020 is an apocalyptic number.

1122345020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122345020 is an abundant number, since it is smaller than the sum of its proper divisors (1234579564).

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

1122345020 is a wasteful number, since it uses less digits than its factorization.

1122345020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56117260 (or 56117258 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1122345020 is about 33501.4181789368. The cubic root of 1122345020 is about 1039.2231069258.

Adding to 1122345020 its reverse (205432211), we get a palindrome (1327777231).

The spelling of 1122345020 in words is "one billion, one hundred twenty-two million, three hundred forty-five thousand, twenty".