1012011120020 has 48 divisors (see below), whose sum is σ = 2129206262400. Its totient is φ = 404046380160.

The previous prime is 1012011120019. The next prime is 1012011120149. The reversal of 1012011120020 is 200211102101.

It is a junction number, because it is equal to n+sod(n) for n = 1012011119983 and 1012011120010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30119630 + ... + 30153210.

It is an arithmetic number, because the mean of its divisors is an integer number (44358463800).

Almost surely, 2^{1012011120020} is an apocalyptic number.

1012011120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012011120020 is an abundant number, since it is smaller than the sum of its proper divisors (1117195142380).

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

1012011120020 is a wasteful number, since it uses less digits than its factorization.

1012011120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36368 (or 36366 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012011120020 its reverse (200211102101), we get a palindrome (1212222222121).

It can be divided in two parts, 101201 and 1120020, that added together give a palindrome (1221221).

The spelling of 1012011120020 in words is "one trillion, twelve billion, eleven million, one hundred twenty thousand, twenty".