1012100001020 has 12 divisors (see below), whose sum is σ = 2125410002184. Its totient is φ = 404840000400.

The previous prime is 1012100001019. The next prime is 1012100001023. The reversal of 1012100001020 is 201000012101.

It is a junction number, because it is equal to n+sod(n) for n = 1012100000989 and 1012100001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012100001023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25302500006 + ... + 25302500045.

It is an arithmetic number, because the mean of its divisors is an integer number (177117500182).

Almost surely, 2^{1012100001020} is an apocalyptic number.

1012100001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012100001020 is an abundant number, since it is smaller than the sum of its proper divisors (1113310001164).

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

1012100001020 is a wasteful number, since it uses less digits than its factorization.

1012100001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50605000060 (or 50605000058 counting only the distinct ones).

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

Adding to 1012100001020 its reverse (201000012101), we get a palindrome (1213100013121).

The spelling of 1012100001020 in words is "one trillion, twelve billion, one hundred million, one thousand, twenty".