1122020544 has 28 divisors (see below), whose sum is σ = 2968679864. Its totient is φ = 374006784.

The previous prime is 1122020533. The next prime is 1122020573. The reversal of 1122020544 is 4450202211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122020544.

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 3 ways as a sum of consecutive naturals, for example, 2921737 + ... + 2922120.

Almost surely, 2^1122020544 is an apocalyptic number.

It is an amenable number.

1122020544 is an abundant number, since it is smaller than the sum of its proper divisors (1846659320).

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

1122020544 is an equidigital number, since it uses as much as digits as its factorization.

1122020544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843872 (or 5843862 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1122020544 is about 33496.5751085092. The cubic root of 1122020544 is about 1039.1229489376.

Adding to 1122020544 its reverse (4450202211), we get a palindrome (5572222755).

The spelling of 1122020544 in words is "one billion, one hundred twenty-two million, twenty thousand, five hundred forty-four".