1200003220003 has 16 divisors (see below), whose sum is σ = 1374931920064. Its totient is φ = 1025950302720.

The previous prime is 1200003220001. The next prime is 1200003220063. The reversal of 1200003220003 is 3000223000021.

It is a happy number.

It is not a de Polignac number, because 1200003220003 - 2¹ = 1200003220001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200003220001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18288751 + ... + 18354247.

It is an arithmetic number, because the mean of its divisors is an integer number (85933245004).

Almost surely, 2^{1200003220003} is an apocalyptic number.

1200003220003 is a deficient number, since it is larger than the sum of its proper divisors (174928700061).

1200003220003 is an equidigital number, since it uses as much as digits as its factorization.

1200003220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72142.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 1200003220003 its reverse (3000223000021), we get a palindrome (4200226220024).

The spelling of 1200003220003 in words is "one trillion, two hundred billion, three million, two hundred twenty thousand, three".