1011110020 has 48 divisors (see below), whose sum is σ = 2303099568. Its totient is φ = 371363840.

The previous prime is 1011110011. The next prime is 1011110021. The reversal of 1011110020 is 200111101.

It can be written as a sum of positive squares in 8 ways, for example, as 887364 + 1010222656 = 942^2 + 31784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011109985 and 1011110012.

It is not an unprimeable number, because it can be changed into a prime (1011110021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22327 + ... + 50206.

It is an arithmetic number, because the mean of its divisors is an integer number (47981241).

Almost surely, 2^1011110020 is an apocalyptic number.

1011110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011110020 is an abundant number, since it is smaller than the sum of its proper divisors (1291989548).

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

1011110020 is a wasteful number, since it uses less digits than its factorization.

1011110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72600 (or 72598 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1011110020 is about 31797.9562236317. The cubic root of 1011110020 is about 1003.6897093014.

Adding to 1011110020 its reverse (200111101), we get a palindrome (1211221121).

The spelling of 1011110020 in words is "one billion, eleven million, one hundred ten thousand, twenty".