1122420020 has 12 divisors (see below), whose sum is σ = 2357082084. Its totient is φ = 448968000.

The previous prime is 1122420017. The next prime is 1122420083. The reversal of 1122420020 is 200242211.

It can be written as a sum of positive squares in 2 ways, for example, as 171191056 + 951228964 = 13084^2 + 30842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1122419977 and 1122420004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28060481 + ... + 28060520.

It is an arithmetic number, because the mean of its divisors is an integer number (196423507).

Almost surely, 2^1122420020 is an apocalyptic number.

1122420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122420020 is an abundant number, since it is smaller than the sum of its proper divisors (1234662064).

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

1122420020 is a wasteful number, since it uses less digits than its factorization.

1122420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56121010 (or 56121008 counting only the distinct ones).

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

The square root of 1122420020 is about 33502.5375158360. The cubic root of 1122420020 is about 1039.2462548870.

Adding to 1122420020 its reverse (200242211), we get a palindrome (1322662231).

The spelling of 1122420020 in words is "one billion, one hundred twenty-two million, four hundred twenty thousand, twenty".