1012100000202 has 48 divisors (see below), whose sum is σ = 2229769426248. Its totient is φ = 331696535040.

The previous prime is 1012100000147. The next prime is 1012100000221. The reversal of 1012100000202 is 2020000012101.

It can be written as a sum of positive squares in 4 ways, for example, as 57979342521 + 954120657681 = 240789^2 + 976791^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2434918 + ... + 2820110.

Almost surely, 2^{1012100000202} is an apocalyptic number.

1012100000202 is an abundant number, since it is smaller than the sum of its proper divisors (1217669426046).

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

1012100000202 is a wasteful number, since it uses less digits than its factorization.

1012100000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387655 (or 387652 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1012100000202 its reverse (2020000012101), we get a palindrome (3032100012303).

The spelling of 1012100000202 in words is "one trillion, twelve billion, one hundred million, two hundred two", and thus it is an aban number.