1012103100020 has 12 divisors (see below), whose sum is σ = 2125416510084. Its totient is φ = 404841240000.

The previous prime is 1012103099989. The next prime is 1012103100037. The reversal of 1012103100020 is 200013012101.

It can be written as a sum of positive squares in 2 ways, for example, as 725379262864 + 286723837156 = 851692^2 + 535466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012103099974 and 1012103100010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25302577481 + ... + 25302577520.

It is an arithmetic number, because the mean of its divisors is an integer number (177118042507).

Almost surely, 2^{1012103100020} is an apocalyptic number.

1012103100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012103100020 is an abundant number, since it is smaller than the sum of its proper divisors (1113313410064).

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

1012103100020 is a wasteful number, since it uses less digits than its factorization.

1012103100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50605155010 (or 50605155008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1012103100020 its reverse (200013012101), we get a palindrome (1212116112121).

The spelling of 1012103100020 in words is "one trillion, twelve billion, one hundred three million, one hundred thousand, twenty".