1011011110020 has 144 divisors (see below), whose sum is σ = 3113187849408. Its totient is φ = 265520851200.

The previous prime is 1011011109967. The next prime is 1011011110027. The reversal of 1011011110020 is 200111101101.

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 = 1011011109984 and 1011011110011.

It is not an unprimeable number, because it can be changed into a prime (1011011110027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102107070 + ... + 102116970.

Almost surely, 2^{1011011110020} is an apocalyptic number.

1011011110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011011110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556593924704).

1011011110020 is an abundant number, since it is smaller than the sum of its proper divisors (2102176739388).

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

1011011110020 is a wasteful number, since it uses less digits than its factorization.

1011011110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450 (or 18445 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1011011110020 its reverse (200111101101), we get a palindrome (1211122211121).

It can be divided in two parts, 101101 and 1110020, that added together give a palindrome (1211121).

The spelling of 1011011110020 in words is "one trillion, eleven billion, eleven million, one hundred ten thousand, twenty".