1200012200010 has 96 divisors (see below), whose sum is σ = 3364775603280. Its totient is φ = 294970788864.

The previous prime is 1200012199999. The next prime is 1200012200027. The reversal of 1200012200010 is 100022100021.

It can be written as a sum of positive squares in 8 ways, for example, as 35665455609 + 1164346744401 = 188853^2 + 1079049^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1200012199965 and 1200012200001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106222 + ... + 1552838.

Almost surely, 2^{1200012200010} is an apocalyptic number.

1200012200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200012200010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682387801640).

1200012200010 is an abundant number, since it is smaller than the sum of its proper divisors (2164763403270).

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

1200012200010 is a wasteful number, since it uses less digits than its factorization.

1200012200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447352 (or 1447349 counting only the distinct ones).

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

Adding to 1200012200010 its reverse (100022100021), we get a palindrome (1300034300031).

The spelling of 1200012200010 in words is "one trillion, two hundred billion, twelve million, two hundred thousand, ten".