1011110200020 has 36 divisors (see below), whose sum is σ = 3067034273940. Its totient is φ = 269629386624.

The previous prime is 1011110200007. The next prime is 1011110200117. The reversal of 1011110200020 is 200020111101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 786126943044 + 224983256976 = 886638^2 + 474324^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011110199975 and 1011110200011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2808639265 + ... + 2808639624.

Almost surely, 2^{1011110200020} is an apocalyptic number.

1011110200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011110200020 is an abundant number, since it is smaller than the sum of its proper divisors (2055924073920).

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

1011110200020 is a wasteful number, since it uses less digits than its factorization.

1011110200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617278904 (or 5617278899 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011110200020 its reverse (200020111101), we get a palindrome (1211130311121).

The spelling of 1011110200020 in words is "one trillion, eleven billion, one hundred ten million, two hundred thousand, twenty".