1011000120020 has 48 divisors (see below), whose sum is σ = 2320659936000. Its totient is φ = 366914094720.

The previous prime is 1011000120017. The next prime is 1011000120023. The reversal of 1011000120020 is 200210001101.

1011000120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1011000120017) and next prime (1011000120023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011000120023) 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, 4402220 + ... + 4626179.

It is an arithmetic number, because the mean of its divisors is an integer number (48347082000).

Almost surely, 2^{1011000120020} is an apocalyptic number.

1011000120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011000120020 is an abundant number, since it is smaller than the sum of its proper divisors (1309659815980).

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

1011000120020 is a wasteful number, since it uses less digits than its factorization.

1011000120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028928 (or 9028926 counting only the distinct ones).

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

Adding to 1011000120020 its reverse (200210001101), we get a palindrome (1211210121121).

The spelling of 1011000120020 in words is "one trillion, eleven billion, one hundred twenty thousand, twenty".