1200110020 has 24 divisors (see below), whose sum is σ = 2525203800. Its totient is φ = 479096832.

The previous prime is 1200110017. The next prime is 1200110029. The reversal of 1200110020 is 200110021.

It can be written as a sum of positive squares in 4 ways, for example, as 161594944 + 1038515076 = 12712^2 + 32226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200109985 and 1200110012.

It is not an unprimeable number, because it can be changed into a prime (1200110029) 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 7 ways as a sum of consecutive naturals, for example, 48765 + ... + 69124.

It is an arithmetic number, because the mean of its divisors is an integer number (105216825).

Almost surely, 2^1200110020 is an apocalyptic number.

1200110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200110020 is an abundant number, since it is smaller than the sum of its proper divisors (1325093780).

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

1200110020 is a wasteful number, since it uses less digits than its factorization.

1200110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118407 (or 118405 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1200110020 is about 34642.6041168963. The cubic root of 1200110020 is about 1062.6910442168.

Adding to 1200110020 its reverse (200110021), we get a palindrome (1400220041).

Subtracting from 1200110020 its reverse (200110021), we obtain a palindrome (999999999).

The spelling of 1200110020 in words is "one billion, two hundred million, one hundred ten thousand, twenty".