1172218120 has 64 divisors (see below), whose sum is σ = 2676337200. Its totient is φ = 462028800.

The previous prime is 1172218111. The next prime is 1172218121. The reversal of 1172218120 is 218122711.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 924281604 + 247936516 = 30402^2 + 15746^2 .

It is not an unprimeable number, because it can be changed into a prime (1172218121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1037716 + ... + 1038844.

Almost surely, 2^1172218120 is an apocalyptic number.

1172218120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172218120 is an abundant number, since it is smaller than the sum of its proper divisors (1504119080).

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

1172218120 is a wasteful number, since it uses less digits than its factorization.

1172218120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 1172218120 is about 34237.6710656552. The cubic root of 1172218120 is about 1054.3937188719.

The spelling of 1172218120 in words is "one billion, one hundred seventy-two million, two hundred eighteen thousand, one hundred twenty".