1001112020 has 12 divisors (see below), whose sum is σ = 2102335284. Its totient is φ = 400444800.

The previous prime is 1001112017. The next prime is 1001112041. The reversal of 1001112020 is 202111001.

It can be written as a sum of positive squares in 2 ways, for example, as 756690064 + 244421956 = 27508^2 + 15634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1001111989 and 1001112007.

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, 25027781 + ... + 25027820.

It is an arithmetic number, because the mean of its divisors is an integer number (175194607).

Almost surely, 2^1001112020 is an apocalyptic number.

1001112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001112020 is an abundant number, since it is smaller than the sum of its proper divisors (1101223264).

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

1001112020 is a wasteful number, since it uses less digits than its factorization.

1001112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50055610 (or 50055608 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1001112020 is about 31640.3542963729. The cubic root of 1001112020 is about 1000.3705360194.

Adding to 1001112020 its reverse (202111001), we get a palindrome (1203223021).

The spelling of 1001112020 in words is "one billion, one million, one hundred twelve thousand, twenty".