1011012000020 has 48 divisors (see below), whose sum is σ = 2316210398208. Its totient is φ = 367629010560.

The previous prime is 1011012000007. The next prime is 1011012000071. The reversal of 1011012000020 is 200002101101.

It is a junction number, because it is equal to n+sod(n) for n = 1011011999971 and 1011012000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9966797 + ... + 10067723.

It is an arithmetic number, because the mean of its divisors is an integer number (48254383296).

Almost surely, 2^{1011012000020} is an apocalyptic number.

1011012000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011012000020 is an abundant number, since it is smaller than the sum of its proper divisors (1305198398188).

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

1011012000020 is a wasteful number, since it uses less digits than its factorization.

1011012000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146480 (or 146478 counting only the distinct ones).

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

Adding to 1011012000020 its reverse (200002101101), we get a palindrome (1211014101121).

The spelling of 1011012000020 in words is "one trillion, eleven billion, twelve million, twenty", and thus it is an aban number and an uban number.