12103011003221 has 16 divisors (see below), whose sum is σ = 12281827941936. Its totient is φ = 11924552779776.

The previous prime is 12103011003217. The next prime is 12103011003227. The reversal of 12103011003221 is 12230011030121.

It can be written as a sum of positive squares in 8 ways, for example, as 2744857011121 + 9358153992100 = 1656761^2 + 3059110^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103011003221 - 2² = 12103011003217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12103011003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103011003227) 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, 281751881 + ... + 281794833.

It is an arithmetic number, because the mean of its divisors is an integer number (767614246371).

Almost surely, 2^{12103011003221} is an apocalyptic number.

It is an amenable number.

12103011003221 is a deficient number, since it is larger than the sum of its proper divisors (178816938715).

12103011003221 is a wasteful number, since it uses less digits than its factorization.

12103011003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47032.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12103011003221 its reverse (12230011030121), we get a palindrome (24333022033342).

The spelling of 12103011003221 in words is "twelve trillion, one hundred three billion, eleven million, three thousand, two hundred twenty-one".