1200023220012 has 24 divisors (see below), whose sum is σ = 2890378509312. Its totient is φ = 387104264400.

The previous prime is 1200023219959. The next prime is 1200023220041. The reversal of 1200023220012 is 2100223200021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200023219973 and 1200023220000.

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 7 ways as a sum of consecutive naturals, for example, 1612934064 + ... + 1612934807.

It is an arithmetic number, because the mean of its divisors is an integer number (120432437888).

Almost surely, 2^{1200023220012} is an apocalyptic number.

1200023220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200023220012 is an abundant number, since it is smaller than the sum of its proper divisors (1690355289300).

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

1200023220012 is a wasteful number, since it uses less digits than its factorization.

1200023220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225868909 (or 3225868907 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1200023220012 its reverse (2100223200021), we get a palindrome (3300246420033).

The spelling of 1200023220012 in words is "one trillion, two hundred billion, twenty-three million, two hundred twenty thousand, twelve".