1172110020 has 24 divisors (see below), whose sum is σ = 3281908224. Its totient is φ = 312562656.

The previous prime is 1172109977. The next prime is 1172110021. The reversal of 1172110020 is 200112711.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1172110021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9767524 + ... + 9767643.

It is an arithmetic number, because the mean of its divisors is an integer number (136746176).

Almost surely, 2^1172110020 is an apocalyptic number.

1172110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172110020 is an abundant number, since it is smaller than the sum of its proper divisors (2109798204).

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

1172110020 is a wasteful number, since it uses less digits than its factorization.

1172110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19535179 (or 19535177 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 1172110020 is about 34236.0923587959. The cubic root of 1172110020 is about 1054.3613063988.

Adding to 1172110020 its reverse (200112711), we get a palindrome (1372222731).

The spelling of 1172110020 in words is "one billion, one hundred seventy-two million, one hundred ten thousand, twenty".