1200221110012 has 24 divisors (see below), whose sum is σ = 2182557686400. Its totient is φ = 576818792256.

The previous prime is 1200221110007. The next prime is 1200221110043. The reversal of 1200221110012 is 2100111220021.

It is a junction number, because it is equal to n+sod(n) for n = 1200221109974 and 1200221110001.

It is a congruent number.

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, 23173087 + ... + 23224822.

It is an arithmetic number, because the mean of its divisors is an integer number (90939903600).

Almost surely, 2^{1200221110012} is an apocalyptic number.

It is an amenable number.

1200221110012 is a deficient number, since it is larger than the sum of its proper divisors (982336576388).

1200221110012 is a wasteful number, since it uses less digits than its factorization.

1200221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46398165 (or 46398163 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200221110012 its reverse (2100111220021), we get a palindrome (3300332330033).

The spelling of 1200221110012 in words is "one trillion, two hundred billion, two hundred twenty-one million, one hundred ten thousand, twelve".