1192220020 has 12 divisors (see below), whose sum is σ = 2503662084. Its totient is φ = 476888000.

The previous prime is 1192219997. The next prime is 1192220033. The reversal of 1192220020 is 200222911.

It can be written as a sum of positive squares in 2 ways, for example, as 878292496 + 313927524 = 29636^2 + 17718^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1192220020.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 29805481 + ... + 29805520.

It is an arithmetic number, because the mean of its divisors is an integer number (208638507).

Almost surely, 2^1192220020 is an apocalyptic number.

1192220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1192220020 is an abundant number, since it is smaller than the sum of its proper divisors (1311442064).

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

1192220020 is a wasteful number, since it uses less digits than its factorization.

1192220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59611010 (or 59611008 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1192220020 is about 34528.5392103402. The cubic root of 1192220020 is about 1060.3570708751.

Adding to 1192220020 its reverse (200222911), we get a palindrome (1392442931).

The spelling of 1192220020 in words is "one billion, one hundred ninety-two million, two hundred twenty thousand, twenty".