1012100012200 has 48 divisors (see below), whose sum is σ = 2376430917660. Its totient is φ = 400831680000.

The previous prime is 1012100012107. The next prime is 1012100012251. The reversal of 1012100012200 is 22100012101.

It can be written as a sum of positive squares in 6 ways, for example, as 530511203044 + 481588809156 = 728362^2 + 693966^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25031781 + ... + 25072180.

Almost surely, 2^{1012100012200} is an apocalyptic number.

1012100012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012100012200 is an abundant number, since it is smaller than the sum of its proper divisors (1364330905460).

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

1012100012200 is a wasteful number, since it uses less digits than its factorization.

1012100012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50104078 (or 50104069 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1012100012200 its reverse (22100012101), we get a palindrome (1034200024301).

Subtracting from 1012100012200 its reverse (22100012101), we obtain a palindrome (990000000099).

The spelling of 1012100012200 in words is "one trillion, twelve billion, one hundred million, twelve thousand, two hundred".