1011120020 has 36 divisors (see below), whose sum is σ = 2219708820. Its totient is φ = 386859264.

The previous prime is 1011120013. The next prime is 1011120023. The reversal of 1011120020 is 200211101.

1011120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119858704 + 891261316 = 10948^2 + 29854^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011120023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37205 + ... + 58364.

Almost surely, 2^1011120020 is an apocalyptic number.

1011120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011120020 is an abundant number, since it is smaller than the sum of its proper divisors (1208588800).

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

1011120020 is a wasteful number, since it uses less digits than its factorization.

1011120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95624 (or 95599 counting only the distinct ones).

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

The square root of 1011120020 is about 31798.1134660533. The cubic root of 1011120020 is about 1003.6930181613.

Adding to 1011120020 its reverse (200211101), we get a palindrome (1211331121).

The spelling of 1011120020 in words is "one billion, eleven million, one hundred twenty thousand, twenty".